Patent US2988994A successfully refreshed from Google Patents.
US2988994A
Expired / Lapsed
US
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Shaped charge with cylindrical liner
Assignee: Individual
•
Filing: 1957-02-21
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Granted: 1961-06-20
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Expires: 1977-02-21
Abstract
No abstract record available.
Inventors
- 👤 Jr Carl W Fleischer
- 👤 Harold W Euker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 14:34
CPC Classifications
F; F42; F42B; F42B12/00; F42B12/02; F42B12/04; F42B12/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US556903A
Cited
USRE23211E
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US2700934A
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US2764092A
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US2672094A
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US2708877A
Cited
US2809585A
Cited
GB714747A
Cited
US2763210A
Cited
FR1100139A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-06-19 | 1964-12-19 | 1965-06-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-06-19 | 1968-12-19 | 1969-06-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-06-19 | 1972-12-19 | 1973-06-20 | $7700.00 | Window Closed / Lapsed |