US2987997A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Blasting cap
Assignee: EIDP Inc
•
Filing: 1958-11-06
•
Granted: 1961-06-13
•
Expires: 1978-11-06
Abstract
No abstract record available.
Inventors
- 👤 Jr John Paul Ireland
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 13:13
CPC Classifications
F; F42; F42B; F42B3/00; F42B3/10; F42B3/103; F42B3/12; F42B3/125; F42B3/18
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1832052A
Cited
US2086548A
Cited
US2103014A
Cited
US2429490A
Cited
US2478415A
Cited
US2658451A
Cited
US2802421A
Cited
US2878752A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-06-12 | 1964-12-12 | 1965-06-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-06-12 | 1968-12-12 | 1969-06-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-06-12 | 1972-12-12 | 1973-06-13 | $7700.00 | Window Closed / Lapsed |