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US2920570A
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US
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Safety and delay arming device
Assignee: Individual
•
Filing: 1956-12-17
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Granted: 1960-01-12
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Expires: 1976-12-17
Abstract
No abstract record available.
Inventors
- 👤 Albert E Martin
- 👤 Elwood H Mullins
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 06:19
CPC Classifications
F; F42; F42C; F42C15/00; F42C15/36
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2458470A
Cited
US2485817A
Cited
US2472366A
Cited
GB606474A
Cited
US2773449A
Cited
US2775942A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-01-11 | 1963-07-13 | 1964-01-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-01-11 | 1967-07-13 | 1968-01-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-01-11 | 1971-07-13 | 1972-01-12 | $7700.00 | Window Closed / Lapsed |