In case you aren't a Youtuber or haven't checked out this vid, it's a nice timeline of AB Electrolux (1919-1998) and Lux International (1912-1919; 1998-present) "firsts":
1912 - Lux I: first electric household vac with blower
1921 - Lux V: first vac with sleds
1922 - Lux VII: first handheld vac in the German market
1928 - Lux XI: first vac w/protection against electric shock, use of air stream, motor protection filter
1930 - Lux XII: first vac w/"bacteria catchers", dust-level indicator, motor embedded in rubber, twistable connecting hose, radio interference protection
1934 - Z25: first vac w/conical hose (gives higher speed of current), twist nozzle & thread lifter, liquid vaporizer for shampooing, device for moth control
1951 - Z55: first vac w/foot switch, same record performance of 1350mm WS using only 350W, wall-hanging device
1956 - Z55: first vac w/paper dust bags
1958 - Z62: first vac w/telescope tube, thread lifter on the floor brush, small combi nozzle (textile nozzle and dust brush in one), rotating hose on both ends
1961 - Z65: first vac w/the same record performance of 1500mm WS using only 500W, larger combination nozzle, wheel runners, cable winding device (cord wrap)
1966 - Z90 Luxomatic: first vac w/automatic-closing dust bag, dust alarm, automatic cable winder, automated safety feature
1972 - Z320 Jumbo-matic: first vac w/the same record performance of 2000mm WS and 2.5 cubic meters per minute using only 800W, programmed vacuum performance, automated pop-open cover
1975 - Z325 Jumbo-matic: first vac w/rotating furniture-cleaning accessories, automatic breakdown function in case of missing dust bag, changeable automatic nozzles
1980 - D725 Sanft-o-matic: first vac w/energy-saving electronic & "Max" switch, effectiveness (energy) of 23%, official seal for quietness and energy saving
1981 - D730 Logo-matic: first vac w/APC (Automatic Power Control), constant vacuum performance in relation to the fullness of the dust bag, effectiveness (energy) rate of 25%
1988 - D770 Lux Royal: first vac w/LCD and electronically integrated max/min switch, the "Can Do It All" Turbo-Clean!
1994 - D795 first vac w/9m (29 feet 6.331 inches)cable, HEPA filter
1997 - Lux 1 Royal: first vac w/almost 100% air filtering, park position, closable dust opening
2000 - Lux 1 S Royal: first vac w/silver/chrome Swedish steel cover, operating noise of 67dB, effectiveness (energy) rate of 25.4%, 12m (39 feet 4.441 inches)working radius
2009 - Lux Intelligence: first vac w/no loss of suction, intelligence power control, MediClean 5 stages of filtration system, double HEPA filtration, handle control system
1912 - Lux I: first electric household vac with blower
1921 - Lux V: first vac with sleds
1922 - Lux VII: first handheld vac in the German market
1928 - Lux XI: first vac w/protection against electric shock, use of air stream, motor protection filter
1930 - Lux XII: first vac w/"bacteria catchers", dust-level indicator, motor embedded in rubber, twistable connecting hose, radio interference protection
1934 - Z25: first vac w/conical hose (gives higher speed of current), twist nozzle & thread lifter, liquid vaporizer for shampooing, device for moth control
1951 - Z55: first vac w/foot switch, same record performance of 1350mm WS using only 350W, wall-hanging device
1956 - Z55: first vac w/paper dust bags
1958 - Z62: first vac w/telescope tube, thread lifter on the floor brush, small combi nozzle (textile nozzle and dust brush in one), rotating hose on both ends
1961 - Z65: first vac w/the same record performance of 1500mm WS using only 500W, larger combination nozzle, wheel runners, cable winding device (cord wrap)
1966 - Z90 Luxomatic: first vac w/automatic-closing dust bag, dust alarm, automatic cable winder, automated safety feature
1972 - Z320 Jumbo-matic: first vac w/the same record performance of 2000mm WS and 2.5 cubic meters per minute using only 800W, programmed vacuum performance, automated pop-open cover
1975 - Z325 Jumbo-matic: first vac w/rotating furniture-cleaning accessories, automatic breakdown function in case of missing dust bag, changeable automatic nozzles
1980 - D725 Sanft-o-matic: first vac w/energy-saving electronic & "Max" switch, effectiveness (energy) of 23%, official seal for quietness and energy saving
1981 - D730 Logo-matic: first vac w/APC (Automatic Power Control), constant vacuum performance in relation to the fullness of the dust bag, effectiveness (energy) rate of 25%
1988 - D770 Lux Royal: first vac w/LCD and electronically integrated max/min switch, the "Can Do It All" Turbo-Clean!
1994 - D795 first vac w/9m (29 feet 6.331 inches)cable, HEPA filter
1997 - Lux 1 Royal: first vac w/almost 100% air filtering, park position, closable dust opening
2000 - Lux 1 S Royal: first vac w/silver/chrome Swedish steel cover, operating noise of 67dB, effectiveness (energy) rate of 25.4%, 12m (39 feet 4.441 inches)working radius
2009 - Lux Intelligence: first vac w/no loss of suction, intelligence power control, MediClean 5 stages of filtration system, double HEPA filtration, handle control system