US2901525A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Breaker mechanism for frangible ampoule in deferred action primary cell
Assignee: Individual
•
Filing: 1943-09-11
•
Granted: 1959-08-25
•
Expires: 1963-09-11
Abstract
No abstract record available.
Inventors
- 👤 Franklin L Everett
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 07:26
CPC Classifications
H; H01; H01M; H01M6/00; H01M6/30; H01M6/36; H01M6/38
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
DE305287C
Cited
US287924A
Cited
US1311678A
Cited
US1297653A
Cited
US2264902A
Cited
GB526800A
Cited
US2403567A
Cited
US2336701A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-08-24 | 1963-02-23 | 1963-08-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-08-24 | 1967-02-23 | 1967-08-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-08-24 | 1971-02-23 | 1971-08-25 | $7700.00 | Window Closed / Lapsed |