Patent US2909101A successfully refreshed from Google Patents.
US2909101A
Expired / Lapsed
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Gas operated firearm with gas piston surrounding a tubular magazine
Assignee: Sears Roebuck and Co
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Filing: 1954-03-22
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Granted: 1959-10-20
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Expires: 1974-03-22
Abstract
No abstract record available.
Inventors
- 👤 Robert L Hillberg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 22:23
CPC Classifications
F; F41; F41A; F41A3/00; F41A3/12; F41A3/14; F41A3/32; F41A19/00; F41A19/06; F41A19/15; F41A5/00; F41A5/18; F41A9/00; F41A9/01; F41A9/06; F41A9/09; F41A9/10; F41A9/13; F41A9/16; F41A9/17; F41A9/18
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US785971A
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US966995A
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US1157571A
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DE421613C
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DE702757C
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US2558364A
Cited
FR880416A
Cited
US2482880A
Cited
US2596841A
Cited
US2685754A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-10-19 | 1963-04-20 | 1963-10-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-10-19 | 1967-04-20 | 1967-10-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-10-19 | 1971-04-20 | 1971-10-20 | $7700.00 | Window Closed / Lapsed |