US2632830A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Indexed control
Assignee: Duracell Inc USA
•
Filing: 1950-12-27
•
Granted: 1953-03-24
•
Expires: 1970-12-27
Abstract
No abstract record available.
Inventors
- 👤 Robert J Aust
- 👤 Walter E Peek
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 22:44
CPC Classifications
H; H01; H01C; H01C10/00; H01C10/30; H01C10/32; H01C10/36; H01H; H01H19/00; H01H19/02; H01H19/10; H01H19/11
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US914878A
Cited
US1754754A
Cited
DE511655C
Cited
US2133858A
Cited
FR840511A
Cited
US2177291A
Cited
US2449019A
Cited
CH252902A
Cited
US2484667A
Cited
US2519215A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-03-23 | 1956-09-22 | 1957-03-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-03-23 | 1960-09-22 | 1961-03-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-03-23 | 1964-09-22 | 1965-03-24 | $7700.00 | Window Closed / Lapsed |