US2502193A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Safety release for blasting shells
Assignee: Cardox Corp
•
Filing: 1946-03-15
•
Granted: 1950-03-28
•
Expires: 1966-03-15
Abstract
No abstract record available.
Inventors
- 👤 Hilding V Williamson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 12:01
CPC Classifications
F; F42; F42B; F42B3/00; F42B3/04; F42B3/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US138171A
Cited
US1250680A
Cited
GB276279A
Cited
US1805541A
Cited
US2242547A
Cited
US2207191A
Cited
US2326771A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-03-27 | 1953-09-26 | 1954-03-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-03-27 | 1957-09-26 | 1958-03-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-03-27 | 1961-09-26 | 1962-03-28 | $7700.00 | Window Closed / Lapsed |