US2572017A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dry battery cell
Assignee: Individual
•
Filing: 1950-07-03
•
Granted: 1951-10-23
•
Expires: 1970-07-03
Abstract
No abstract record available.
Inventors
- 👤 Grenville B Ellis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 11:57
CPC Classifications
H; H01; H01M; H01M6/00; H01M6/04; H01M6/06; H01M50/00; H01M50/50; H01M50/543; H01M50/552; H01M50/559; H01M50/56; H01M6/10; H01M6/103; H01M50/562
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1837361A
Cited
US2536696A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-10-22 | 1955-04-23 | 1955-10-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-10-22 | 1959-04-23 | 1959-10-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-10-22 | 1963-04-23 | 1963-10-23 | $7700.00 | Window Closed / Lapsed |