US2687092A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Protective device for blasting cartridges
Assignee: Individual
•
Filing: 1951-02-26
•
Granted: 1954-08-24
•
Expires: 1971-02-26
Abstract
No abstract record available.
Inventors
- 👤 Bert F Duesing
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 09:12
CPC Classifications
F; F42; F42D; F42D1/00; F42D1/08; F42D1/22; F42D1/10; F42D1/18
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US156673A
Cited
US289768A
Cited
US1458740A
Cited
US1571122A
Cited
US1560815A
Cited
US1832132A
Cited
US2529763A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-08-23 | 1958-02-22 | 1958-08-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-08-23 | 1962-02-22 | 1962-08-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-08-23 | 1966-02-22 | 1966-08-24 | $7700.00 | Window Closed / Lapsed |