Patent US2955674A successfully refreshed from Google Patents.
US2955674A
Expired / Lapsed
US
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Suction cleaning appliance
Assignee: Hoover Co
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Filing: 1958-08-08
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Granted: 1960-10-11
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Expires: 1978-08-08
Abstract
No abstract record available.
Inventors
- 👤 Don C Krammes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 14:54
CPC Classifications
A; A47; A47L; A47L11/00; A47L11/40; A47L11/408; A47L11/4083; A47L11/29; A47L11/30; A47L11/4013; A47L11/4016; A47L11/4027; A47L11/4075; A47L7/00; A47L7/0004; A47L7/0042; Y; Y10; Y10T; Y10T137/00; Y10T137/0753; Y10T137/0874
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-10-11 | 1964-04-11 | 1964-10-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-10-11 | 1968-04-11 | 1968-10-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-10-11 | 1972-04-11 | 1972-10-11 | $7700.00 | Window Closed / Lapsed |