US2449560A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gas operation of firearms action slides
Assignee: Individual
•
Filing: 1944-07-12
•
Granted: 1948-09-21
•
Expires: 1964-07-12
Abstract
No abstract record available.
Inventors
- 👤 Jr Samuel W Marshall
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 02:21
CPC Classifications
F; F41; F41A; F41A5/00; F41A5/18; F41A5/26
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US570388A
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US1333498A
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US1366863A
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US1410354A
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GB293012A
Cited
US1738501A
Cited
FR689863A
Cited
US2308257A
Cited
US2355768A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-09-21 | 1952-03-22 | 1952-09-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-09-21 | 1956-03-22 | 1956-09-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-09-21 | 1960-03-22 | 1960-09-21 | $7700.00 | Window Closed / Lapsed |