The little blue suction-only canister vac was made by Sanyo - Sanyo always made great suction-only canister vacs that were both powerful and extremely quiet. The little $50 white canister vacs a few pages back (product #9 on the seventh page) was also made by Sanyo - at some point Sears called it the "Let's Clean" vac! Some versions of that older white canister had an electrified hose with a power switch on the handle.
My only problem with many of the Sanyo canister vacs from that era is that they were bagless and emptying the dirt cassettes was always a messy task. As well, the hoses were often very short (only 5 feet).
Sears Kenmore vacs were made by many manufacturers besides their prime supplier Whirlpool (later Matshushita/Panasonic). The other suppliers were Sanyo, Regina, Ryobi, LG, Sweden's Electrolux and its Eureka subsidiary.