US2758331A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Suction cleaning tool with adjustable brush
Assignee: Hoover Co
•
Filing: 1951-09-06
•
Granted: 1956-08-14
•
Expires: 1971-09-06
Abstract
No abstract record available.
Inventors
- 👤 Dale C Gerber
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 16:56
CPC Classifications
A; A47; A47L; A47L9/00; A47L9/02; A47L9/06; A47L9/0673; A47L9/0606; A47L9/0613
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US170749A
Cited
GB191301229A
Cited
US1869157A
Cited
US2029668A
Cited
US2035688A
Cited
US2180930A
Cited
US2241776A
Cited
US2235225A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-08-14 | 1960-02-13 | 1960-08-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-08-14 | 1964-02-13 | 1964-08-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-08-14 | 1968-02-13 | 1968-08-14 | $7700.00 | Window Closed / Lapsed |