Patent US3540939A successfully refreshed from Google Patents.
US3540939A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Water-activable battery construction
Assignee: General Battery Corp
•
Filing: 1968-05-29
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Granted: 1970-11-17
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Expires: 1988-05-29
Abstract
No abstract record available.
Inventors
- 👤 John P Badger
- 👤 Herbert A Bernholtz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 15:19
CPC Classifications
H; H01; H01M; H01M10/00; H01M10/06; H01M6/00; H01M6/30; H01M6/32; Y; Y02; Y02E; Y02E60/00; Y02E60/10; Y02T; Y02T10/00; Y02T10/60; Y02T10/70
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) | 1973-11-16 | 1974-05-18 | 1974-11-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-11-16 | 1978-05-18 | 1978-11-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-11-16 | 1982-05-18 | 1982-11-17 | $7700.00 | Window Closed / Lapsed |