US2474448A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Semiautomatic nozzle adjustment for suction cleaners
Assignee: Hoover Co
•
Filing: 1943-05-05
•
Granted: 1949-06-28
•
Expires: 1963-05-05
Abstract
No abstract record available.
Inventors
- 👤 Harry B White
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 05:32
CPC Classifications
A; A47; A47L; A47L5/00; A47L5/12; A47L5/22; A47L5/28; A47L5/34
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2063061A
Cited
US2063062A
Cited
US2178006A
Cited
US2167785A
Cited
US2343227A
Cited
US2379316A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-06-27 | 1952-12-27 | 1953-06-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-06-27 | 1956-12-27 | 1957-06-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-06-27 | 1960-12-27 | 1961-06-28 | $7700.00 | Window Closed / Lapsed |