Patent US2880306A successfully refreshed from Google Patents.
US2880306A
Expired / Lapsed
US
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Electrical appliances
Assignee: Individual
•
Filing: 1956-03-01
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Granted: 1959-03-31
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Expires: 1976-03-01
Abstract
No abstract record available.
Inventors
- 👤 Witte Waldemar
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:34
CPC Classifications
F; F21; F21L; F21L4/00; F21L4/08; F21L4/085; H; H01; H01M; H01M10/00; H01M10/42; H01M10/425; H01M10/4264; H01M10/44; H01M10/441; H01M10/46; H01M50/00; H01M50/20; H01M50/233; H01M50/24; H01M50/247; H01M50/296; H01M50/298; H02; H02J; H02J7/00; H02J7/02; H02M; H02M7/00; H02M7/02; H02M7/04; H02M7/06; H02J2207/00; H02J2207/20; Y; Y02; Y02E; Y02E60/00; Y02E60/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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Cited
US1807331A
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US2072278A
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US2097014A
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US2272040A
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US2444745A
Cited
CH245216A
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US2518039A
Cited
US2642520A
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US2628339A
Cited
US2762907A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-03-30 | 1962-09-29 | 1963-03-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-03-30 | 1966-09-29 | 1967-03-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-03-30 | 1970-09-29 | 1971-03-31 | $7700.00 | Window Closed / Lapsed |