US1491377A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Operating mechanism for searchlights, guns, and the like
Assignee: General Electric Co
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Filing: 1920-01-02
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Granted: 1924-04-22
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Expires: 1940-01-02
Abstract
No abstract record available.
Inventors
- 👤 Guy K Calhoun
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 05:17
CPC Classifications
F; F21; F21V; F21V14/00; F21V14/04; F21V21/00; Y; Y10; Y10T; Y10T74/00; Y10T74/19; Y10T74/19502; Y10T74/19521
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) | 1927-04-22 | 1927-10-22 | 1928-04-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1931-04-22 | 1931-10-22 | 1932-04-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1935-04-22 | 1935-10-22 | 1936-04-22 | $7700.00 | Window Closed / Lapsed |