Patent US2997802A successfully refreshed from Google Patents.
US2997802A
Expired / Lapsed
US
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Chamber plugging device for firearms
Assignee: Individual
•
Filing: 1958-11-26
•
Granted: 1961-08-29
•
Expires: 1978-11-26
Abstract
No abstract record available.
Inventors
- 👤 Lewis C Robbins
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 18:20
CPC Classifications
F; F41; F41A; F41A17/00; F41A17/44
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US790634A
Cited
US1028032A
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FR560025A
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GB304510A
Cited
US1992934A
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US2327334A
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US2403452A
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US2475618A
Cited
US2530560A
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US2478098A
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US2794363A
Cited
US2817172A
Cited
US2887807A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-08-28 | 1965-02-27 | 1965-08-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-08-28 | 1969-02-27 | 1969-08-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-08-28 | 1973-02-27 | 1973-08-29 | $7700.00 | Window Closed / Lapsed |