US2750849A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gas relief valve for firearms
Assignee: Individual
•
Filing: 1954-04-26
•
Granted: 1956-06-19
•
Expires: 1974-04-26
Abstract
No abstract record available.
Inventors
- 👤 Earle M Harvey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 01:59
CPC Classifications
F; F41; F41A; F41A5/00; F41A5/18; F41A5/26; F41A5/28
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-06-19 | 1959-12-19 | 1960-06-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-06-19 | 1963-12-19 | 1964-06-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-06-19 | 1967-12-19 | 1968-06-19 | $7700.00 | Window Closed / Lapsed |