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Patent US3041906A successfully refreshed from Google Patents.
US3041906A
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Explosive hole forming apparatus
Assignee: Olin Corp
•
Filing: 1959-08-14
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Granted: 1962-07-03
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Expires: 1979-08-14
Abstract
No abstract record available.
Inventors
- 👤 Charles B Gilman
- 👤 Caro Charles J De
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 16:19
CPC Classifications
B; B21; B21D; B21D28/00; B21D28/02; B21D28/12; B21D28/007; Y; Y10; Y10T; Y10T83/00; Y10T83/222; Y10T83/364; Y10T83/748; Y10T83/7487; Y10T83/7493; Y10T83/75; Y10T83/869; Y10T83/8727; Y10T83/8732
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
DE308571C
Cited
US321547A
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US440837A
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US1704962A
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US1957769A
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US2143252A
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GB617852A
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US2405714A
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US2985050A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-07-02 | 1966-01-01 | 1966-07-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-07-02 | 1970-01-01 | 1970-07-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-07-02 | 1974-01-01 | 1974-07-03 | $7700.00 | Window Closed / Lapsed |