US2416897A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electric switch
Assignee: Duracell Inc USA
•
Filing: 1945-02-09
•
Granted: 1947-03-04
•
Expires: 1965-02-09
Abstract
No abstract record available.
Inventors
- 👤 Robert L Brady
- 👤 Alexander C Wall
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 07:32
CPC Classifications
H; H01; H01H; H01H19/00; H01H19/54; H01H19/60; H01H19/62
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US977721A
Cited
US1205549A
Cited
US2064634A
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US2225344A
Cited
US2203236A
Cited
US2303460A
Cited
US2332434A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-03-03 | 1950-09-02 | 1951-03-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-03-03 | 1954-09-02 | 1955-03-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-03-03 | 1958-09-02 | 1959-03-04 | $7700.00 | Window Closed / Lapsed |