US2940392A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Differential barometric fuze
Assignee: Individual
•
Filing: 1958-01-31
•
Granted: 1960-06-14
•
Expires: 1978-01-31
Abstract
No abstract record available.
Inventors
- 👤 Donald A Loren
- 👤 Alvin Van Every
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 17:54
CPC Classifications
F; F42; F42C; F42C5/00; F42C5/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2110552A
Cited
US2330873A
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US2368747A
Cited
US2466729A
Cited
US2411788A
Cited
US2720835A
Cited
US2647465A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-06-14 | 1963-12-14 | 1964-06-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-06-14 | 1967-12-14 | 1968-06-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-06-14 | 1971-12-14 | 1972-06-14 | $7700.00 | Window Closed / Lapsed |