US2761386A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electric initiator and ignition mixture therefor
Assignee: Hercules Powder Co
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Filing: 1952-12-03
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Granted: 1956-09-04
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Expires: 1972-12-03
Abstract
No abstract record available.
Inventors
- 👤 David T Zebree
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 20:17
CPC Classifications
F; F42; F42B; F42B3/00; F42B3/10; F42B3/16; F42B3/12; F42B3/128
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
47 words
AN ELECTRIC BLASTING INITATOR HAVING AN COMBINATION AN IGNITION ASSEMBLY CONTAINING A BRIDGE WIRE AND A LOOSE IGNITION MIXTURE DISPOSED ABOUT THE BRIDGE WIRE WHICH COMPRISES AN IGNITION MIXTURE OF LEAD AND SELENIUM AND CONTAINS A MINOR AMOUNT OF METAL SALT OF A LONG CHAIN FATTY ACID.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-09-04 | 1960-03-05 | 1960-09-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-09-04 | 1964-03-05 | 1964-09-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-09-04 | 1968-03-05 | 1968-09-04 | $7700.00 | Window Closed / Lapsed |