Patent US2928346A successfully refreshed from Google Patents.
US2928346A
Expired / Lapsed
US
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Arming mechanism
Assignee: Individual
•
Filing: 1951-09-06
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Granted: 1960-03-15
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Expires: 1971-09-06
Abstract
No abstract record available.
Inventors
- 👤 David D Grimes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 12:00
CPC Classifications
F; F42; F42C; F42C15/00; F42C15/18; F42C15/188; F42B; F42B39/00; F42B39/20
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2400242A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-03-15 | 1963-09-14 | 1964-03-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-03-15 | 1967-09-14 | 1968-03-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-03-15 | 1971-09-14 | 1972-03-15 | $7700.00 | Window Closed / Lapsed |