Patent US5287961A successfully refreshed from Google Patents.
Patent US2474716A successfully refreshed from Google Patents.
US2474716A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Salt-water battery
Assignee: Submarine Signal Co
•
Filing: 1944-09-18
•
Granted: 1949-06-28
•
Expires: 1964-09-18
Abstract
No abstract record available.
Inventors
- 👤 John T Beechlyn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 21:56
CPC Classifications
H; H01; H01M; H01M6/00; H01M6/30; H01M6/32; H01M6/34
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
DE34913C
Cited
US1807595A
Cited
US944079A
Cited
US1116893A
Cited
US1331089A
Cited
US1522121A
Cited
US1560798A
Cited
US1851481A
Cited
GB392208A
Cited
US2177235A
Cited
US2115744A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-06-27 | 1952-12-27 | 1953-06-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-06-27 | 1956-12-27 | 1957-06-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-06-27 | 1960-12-27 | 1961-06-28 | $7700.00 | Window Closed / Lapsed |