Patent US2632913A successfully refreshed from Google Patents.
US2632913A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Converter arrangement for suction cleaners
Assignee: Hoover Co
•
Filing: 1950-05-20
•
Granted: 1953-03-31
•
Expires: 1970-05-20
Abstract
No abstract record available.
Inventors
- 👤 Edward R Swann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 15:55
CPC Classifications
A; A47; A47L; A47L5/00; A47L5/12; A47L5/22; A47L5/28; A47L5/32
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2017937A
Cited
US2221746A
Cited
US2314334A
Cited
US2340347A
Cited
US2337936A
Cited
US2355183A
Cited
US2517670A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-03-30 | 1956-09-29 | 1957-03-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-03-30 | 1960-09-29 | 1961-03-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-03-30 | 1964-09-29 | 1965-03-31 | $7700.00 | Window Closed / Lapsed |