US2789502A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Depth charge arming device
Assignee: Individual
•
Filing: 1945-05-26
•
Granted: 1957-04-23
•
Expires: 1965-05-26
Abstract
No abstract record available.
Inventors
- 👤 Grant N Willis
- 👤 Robert M Cate
- 👤 Jr Frank A Clary
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 21:16
CPC Classifications
F; F42; F42C; F42C14/00; F42C14/04; F42C14/045; F42C15/00; F42C15/18; F42C15/188
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1194726A
Cited
DE334992C
Cited
US1448976A
Cited
US1508140A
Cited
US2400549A
Cited
US2488547A
Cited
US2486362A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-04-22 | 1960-10-22 | 1961-04-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-04-22 | 1964-10-22 | 1965-04-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-04-22 | 1968-10-22 | 1969-04-23 | $7700.00 | Window Closed / Lapsed |