Patent US2358326A successfully refreshed from Google Patents.
US2358326A
Expired / Lapsed
US
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Metal composition
Assignee: Duracell Inc USA
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Filing: 1942-12-31
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Granted: 1944-09-19
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Expires: 1962-12-31
Abstract
No abstract record available.
Inventors
- 👤 Franz R Hensel
- 👤 Earl I Larsen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 11:26
CPC Classifications
H; H01; H01F; H01F1/00; H01F1/01; H01F1/03; H01F1/032; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49117; Y10T29/49204; Y10T29/49206; Y10T428/00; Y10T428/12; Y10T428/12014; Y10T428/1216; Y10T428/12181
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) | 1947-09-19 | 1948-03-20 | 1948-09-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1951-09-19 | 1952-03-20 | 1952-09-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1955-09-19 | 1956-03-20 | 1956-09-19 | $7700.00 | Window Closed / Lapsed |