Patent US3109372A successfully refreshed from Google Patents.
US3109372A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bridgeless electric detonator
Assignee: Individual
•
Filing: 1959-05-22
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Granted: 1963-11-05
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Expires: 1979-05-22
Abstract
No abstract record available.
Inventors
- 👤 Richard H F Stresau
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 11:54
CPC Classifications
F; F42; F42B; F42B3/00; F42B3/10; F42B3/14; F42B3/195
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
93 words
A LOW ENERGY ELECTRICALLY ACTUATED DETONATOR COMPRISING; AN ENCLOSURE MEMBER COMPOSED OF A FIRST ELECTRICALLY CONDUCTIVE PORTION AND A SECOND NON-ELECTRICALLY CONDUCTIVE PORTION, A BLIND BORE FORMED IN SAID ELECTRICALLY CONDUCTIVE PORTION AND OPENING TO THE INTERIOR OF SAID ENCLOSURE MEMBER, A QUANTITY OF ELECTROCONDUCTIVE EXPLOSIVE MATERIAL LOCATED AT THE BLIND END OF SAID BORE, A QUANTITY OF NON-ELECTROCONDUCTIVE EXPLOSIVE MATERIAL FILLING THE REMAINING PORTION OF SAID BORE AND SAID ENCLOSURE, AND AN ELECTRODE EXTENDING THROUGH SAID NON-CONDUCTIVE ENCLOSURE PORTION AND SAID NON-ELECTROCONDUCTIVE EXPLOSIVE MATERIAL INTO ELECTRICAL CONTACT WITH SAID ELECTROCONDUCTIVE EXPLOSIVE MATERIAL.
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) | 1966-11-04 | 1967-05-06 | 1967-11-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-11-04 | 1971-05-06 | 1971-11-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-11-04 | 1975-05-06 | 1975-11-05 | $7700.00 | Window Closed / Lapsed |