Patent US1557765A successfully refreshed from Google Patents.
Patent US2767655A successfully refreshed from Google Patents.
US2767655A
Expired / Lapsed
US
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Blasting caps
Assignee: Olin Corp
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Filing: 1953-06-15
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Granted: 1956-10-23
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Expires: 1973-06-15
Abstract
No abstract record available.
Inventors
- 👤 Frederick R Seavey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 09:15
CPC Classifications
F; F42; F42B; F42B3/00; F42B3/10; F42B3/12; F42B3/128
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
18 words
AN ELECTRIC BLASTING CAP HAVING A CASE, CLOSURE PLUG AND LEAD WIRE INSULATION SHEATHS OF ORGANIC PLASTIC MATERIAL
Claim 2
Dependent Claim
18 words
AN ELECTRIC BLASTING CAP HAVING A CASE, CLOSURE PLUG AND LEAD WIRE INSULATION SHEATHS OF ORGANIC PLASTIC MATERIAL
References Cited (Backward Citations)
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US2382921A
Cited
US2399034A
Cited
US2356337A
Cited
US2477458A
Cited
GB647145A
Cited
US2647101A
Cited
US2636866A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-10-23 | 1960-04-23 | 1960-10-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-10-23 | 1964-04-23 | 1964-10-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-10-23 | 1968-04-23 | 1968-10-23 | $7700.00 | Window Closed / Lapsed |