US2889389A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Galvanic battery of the flat cell type and method of producing the same
Assignee: Individual
•
Filing: 1955-04-26
•
Granted: 1959-06-02
•
Expires: 1975-04-26
Abstract
No abstract record available.
Inventors
- 👤 Pentti J Tamminen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 09:55
CPC Classifications
H; H01; H01M; H01M6/00; H01M6/42; H01M6/46
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2583063A
Cited
US2544115A
Cited
US2632784A
Cited
US2671125A
Cited
US2781414A
Cited
GB739990A
Cited
US2774806A
Cited
US2705251A
Cited
US2705253A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-06-01 | 1962-12-01 | 1963-06-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-06-01 | 1966-12-01 | 1967-06-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-06-01 | 1970-12-01 | 1971-06-02 | $7700.00 | Window Closed / Lapsed |