US2771152A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Suction cleaner and disposable dust bag therefor
Assignee: General Electric Co
•
Filing: 1954-02-18
•
Granted: 1956-11-20
•
Expires: 1974-02-18
Abstract
No abstract record available.
Inventors
- 👤 George H Bramhall
- 👤 Warren N Kemnitz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 16:11
CPC Classifications
A; A47; A47L; A47L9/00; A47L9/10; A47L9/14; A47L9/1427
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
FR794294A
Cited
US2070674A
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US2214750A
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US2460851A
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US2520877A
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US2503918A
Cited
US2571125A
Cited
US2528332A
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US2621757A
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US2533057A
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US2625239A
Cited
US2686330A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-11-20 | 1960-05-21 | 1960-11-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-11-20 | 1964-05-21 | 1964-11-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-11-20 | 1968-05-21 | 1968-11-20 | $7700.00 | Window Closed / Lapsed |