Patent US2196302A successfully refreshed from Google Patents.
US2196302A
Expired / Lapsed
US
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Silver copper alloy
Assignee: Duracell Inc USA
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Filing: 1939-02-21
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Granted: 1940-04-09
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Expires: 1959-02-21
Abstract
No abstract record available.
Inventors
- 👤 Franz R Hensel
- 👤 Kenneth L Emmert
- 👤 James W Wiggs
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 14:21
CPC Classifications
B; B23; B23K; B23K35/00; B23K35/22; B23K35/24; B23K35/30; B23K35/3006; C; C22; C22C; C22C5/00; C22C5/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1943-04-09 | 1943-10-09 | 1944-04-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1947-04-09 | 1947-10-09 | 1948-04-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1951-04-09 | 1951-10-09 | 1952-04-09 | $7700.00 | Window Closed / Lapsed |