According to Doug Smith @smithcollection.altervista.org, Easy-Flo Central Vacuum Systems Ltd. of Chilliwack, BC made the Model 1569 for Electrolux. Some other models may also have been made by that company, but I'm not sure since that was the only Electrolux one he posted. Another owner mentioned that his was made in China.
Using evacuumstores.com, eBay, and online customer queries I constructed the chart below.
I'm guessing that each succeeding model was introduced along with the other new cylinders, uprights,commercials, and shampooer-polishers; so that's where I got the years.
1985-86 Model 1561 "Central Vacuum Cleaner" w/PN5 almond/griege (Canada only)
1986-87 Model 1569 "Central Vacuum Cleaner" w/PN6 sand/jade
1987-88 Model 1580 "Central Vacuum Cleaner" w/PN6A stainless steel/black
1988 Model 1584 "Central Vacuum Cleaner" w/pn 1684 stainless steel/black
1988-89 Model 1590 "Central Vacuum Cleaner" w/pn 1750 hammertone black/black
1989-94 Model 1590A/E117A "Central Vacuum Cleaner" w/pn 1752 hammertone black/black
1995-97 Model E130A "Centra Lux" w/pn N106K hammertone black/black
1997-98 Model E130B "Centra Lux" w/pn N106M (red logo) hammertone black/black
1998-2000 Model E130F "Centra Lux" w/pn N106M (blue logo) hammertone black/black
2000-2004 Model E130G "Centra Lux" w/pn N137B hammertone black/black
2004-2013 Model E130J "Centra Lux" w/pn N137S stainless steel/black
2014- Model E130K "Centra Lux" w/pn N137W or N137X stainless steel/black
There's also the Model E130H "Condo Lux" for smaller dwellings made since 2008.