US2691791A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Low height suction cleaner
Assignee: Hoover Co
•
Filing: 1951-05-26
•
Granted: 1954-10-19
•
Expires: 1971-05-26
Abstract
No abstract record available.
Inventors
- 👤 Warren A Humphrey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 19:29
CPC Classifications
A; A47; A47L; A47L5/00; A47L5/12; A47L5/22; A47L5/28; A47L5/30; A47L5/32
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1533806A
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US1660331A
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US2257555A
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US2345623A
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US2287911A
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US2517670A
Cited
US2515554A
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US2540178A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-10-18 | 1958-04-19 | 1958-10-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-10-18 | 1962-04-19 | 1962-10-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-10-18 | 1966-04-19 | 1966-10-19 | $7700.00 | Window Closed / Lapsed |