US2814063A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Self propelled suction cleaner
Assignee: Hoover Co
•
Filing: 1954-08-31
•
Granted: 1957-11-26
•
Expires: 1974-08-31
Abstract
No abstract record available.
Inventors
- 👤 Melvin H Ripple
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 10:27
CPC Classifications
A; A47; A47L; A47L5/00; A47L5/12; A47L5/22; A47L5/28; A47L5/30
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1073513A
Cited
US1465285A
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US1571236A
Cited
US1737568A
Cited
GB325381A
Cited
US2138239A
Cited
CH188645A
Cited
US2148656A
Cited
US2138279A
Cited
US2619209A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-11-25 | 1961-05-27 | 1961-11-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-11-25 | 1965-05-27 | 1965-11-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-11-25 | 1969-05-27 | 1969-11-26 | $7700.00 | Window Closed / Lapsed |