US2387903A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Contacting element
Assignee: Duracell Inc USA
•
Filing: 1944-03-14
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Granted: 1945-10-30
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Expires: 1964-03-14
Abstract
No abstract record available.
Inventors
- 👤 Franz R Hensel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:22
CPC Classifications
B; B23; B23K; B23K35/00; B23K35/02; B23K35/0205; H; H01; H01B; H01B1/00; H01B1/02; H01H; H01H11/00; H01H11/04; H01H11/041; H01H11/045; H01J; H01J2235/00; H01J2235/08; H01J2235/083; H01J2235/084; Y; Y10; Y10S; Y10S428/00; Y10S428/922; Y10S428/9265; Y10S428/929; Y10S428/9335; Y10S428/939; Y10T; Y10T428/00; Y10T428/12; Y10T428/12493; Y10T428/12771; Y10T428/12806; Y10T428/12826; Y10T428/1284; Y10T428/12861; Y10T428/12951; Y10T428/12972
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) | 1948-10-29 | 1949-04-30 | 1949-10-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1952-10-29 | 1953-04-30 | 1953-10-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1956-10-29 | 1957-04-30 | 1957-10-30 | $7700.00 | Window Closed / Lapsed |