Patent US4975035A successfully refreshed from Google Patents.
Patent US2612539A successfully refreshed from Google Patents.
US2612539A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cell and support
Assignee: Honeywell Inc
•
Filing: 1946-08-15
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Granted: 1952-09-30
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Expires: 1966-08-15
Abstract
No abstract record available.
Inventors
- 👤 Clarence A Dyer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 09:50
CPC Classifications
H; H01; H01M; H01M6/00; H01M6/28; Y; Y10; Y10S; Y10S439/00; Y10S439/901
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US494827A
Cited
US1136404A
Cited
GB191327276A
Cited
US1337160A
Cited
US1497786A
Cited
US1760178A
Cited
US2033279A
Cited
US2284547A
Cited
GB551598A
Cited
US2387590A
Cited
US2397460A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-09-30 | 1956-03-31 | 1956-09-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-09-30 | 1960-03-31 | 1960-09-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-09-30 | 1964-03-31 | 1964-09-30 | $7700.00 | Window Closed / Lapsed |