Patent US2453830A successfully refreshed from Google Patents.
US2453830A
Expired / Lapsed
US
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Machine gun
Assignee: Individual
•
Filing: 1932-12-21
•
Granted: 1948-11-16
•
Expires: 1952-12-21
Abstract
No abstract record available.
Inventors
- 👤 George A Chadwick
- 👤 Paul W Burk
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 17:25
CPC Classifications
F; F41; F41A; F41A5/00; F41A5/02; F41A17/00; F41A17/34; F41A17/36; F41A19/00; F41A19/06; F41A19/25; F41A19/27; F41A19/29; F41A19/30; F41A19/34; F41A25/00; F41A25/16; F41A25/18; F41A3/00; F41A3/12; F41A3/36; F41A3/38; F41A3/40; F41A9/00; F41A9/38; F41A9/39; F41A9/40; F41A9/41; F41A9/54; F41A9/55; F41A9/61; F41A9/64; F41A9/65; F41A9/68
Claims Analysis
Total Claims: 0
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-11-16 | 1952-05-17 | 1952-11-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-11-16 | 1956-05-17 | 1956-11-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-11-16 | 1960-05-17 | 1960-11-16 | $7700.00 | Window Closed / Lapsed |