US2582989A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gas piston for firearms
Assignee: Individual
•
Filing: 1948-05-06
•
Granted: 1952-01-22
•
Expires: 1968-05-06
Abstract
No abstract record available.
Inventors
- 👤 Earle M Harvey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 21:21
CPC Classifications
F; F41; F41A; F41A5/00; F41A5/18; F41A5/26
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1136695A
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US1366863A
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FR504934A
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US1534486A
Cited
GB273300A
Cited
US1738501A
Cited
US2058897A
Cited
GB393195A
Cited
CH195364A
Cited
GB501884A
Cited
US2346954A
Cited
US2372339A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-01-21 | 1955-07-23 | 1956-01-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-01-21 | 1959-07-23 | 1960-01-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-01-21 | 1963-07-23 | 1964-01-22 | $7700.00 | Window Closed / Lapsed |