Inventor
William R. Sumerau
Inventor
Easley, SC, US
Overview
Patents· 10 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
A47Lprimary
A47LDomestic washing or cleaning91%
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests9%
PatentTitleYear
4,864,683'Noise isolating motor mounting system for a canister vacuum cleaner'19894,811,452'Auxiliary attachment adaptor and vacuum cleaner for use therewith'19894,763,382'Vacuum cleaner hanging arrangement'19884,757,574'Light plate for vacuum cleaner'19884,670,937'Filter retention system for vacuum cleaners'19874,662,026'Convertible vacuum cleaner handle'19874,516,289'Handle construction for floor care appliance'19854,514,200'Filter bag for floor care appliance'19854,512,057'Floor care appliance'19854,447,930'Power head unit for carpet cleaning'1984Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1984–1988Patents assigned to SINGER CO (8)· patent assignee history
1984–1989Based in Easley, SC, US· patent location history
1989Patents assigned to RYOBI MOTOR PRODUCTS CORP (2)· patent assignee history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| SINGER CO | 8 | 1984–1988 |
| RYOBI MOTOR PRODUCTS CORP | 2 | 1989 |
Locations
| Location | Patents | Span |
|---|---|---|
| Easley, SC, US | 10 | 1984–1989 |