US2697738A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dry cell
Assignee: Dow Chemical Co
•
Filing: 1953-03-27
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Granted: 1954-12-21
•
Expires: 1973-03-27
Abstract
No abstract record available.
Inventors
- 👤 Charles W Glesner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 03:55
CPC Classifications
H; H01; H01M; H01M6/00; H01M6/04; H01M6/06; H01M6/08; H01M50/00; H01M50/30; H01M50/394; H01M50/10; H01M50/147; H01M50/155; H01M50/157; H01M50/172; H01M50/174; H01M50/176
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1487494A
Cited
US1624455A
Cited
US1765673A
Cited
US1855677A
Cited
GB503905A
Cited
US2343194A
Cited
US2612533A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-12-20 | 1958-06-21 | 1958-12-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-12-20 | 1962-06-21 | 1962-12-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-12-20 | 1966-06-21 | 1966-12-21 | $7700.00 | Window Closed / Lapsed |