Patent US2804809A successfully refreshed from Google Patents.
US2804809A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Semi-automatic rifle
Assignee: Individual
•
Filing: 1952-06-13
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Granted: 1957-09-03
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Expires: 1972-06-13
Abstract
No abstract record available.
Inventors
- 👤 Thomas L Frates
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 20:42
CPC Classifications
F; F41; F41A; F41A19/00; F41A19/06; F41A19/42; F41A19/43; F41A19/44; F41A19/45; F41A19/15; F41A3/00; F41A3/12; F41A3/14; F41A3/32
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US398595A
Cited
US1344991A
Cited
US933254A
Cited
US1359609A
Cited
US1453439A
Cited
GB205998A
Cited
DE554834C
Cited
US2126076A
Cited
US2549797A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-09-02 | 1961-03-04 | 1961-09-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-09-02 | 1965-03-04 | 1965-09-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-09-02 | 1969-03-04 | 1969-09-03 | $7700.00 | Window Closed / Lapsed |