Patent US2445339A successfully refreshed from Google Patents.
US2445339A
Expired / Lapsed
US
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Gun tube, breech ring, and coupling means therefor
Assignee: Individual
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Filing: 1946-09-11
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Granted: 1948-07-20
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Expires: 1966-09-11
Abstract
No abstract record available.
Inventors
- 👤 Summerbell William
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 13:57
CPC Classifications
F; F41; F41A; F41A21/00; F41A21/48; F41A21/484; F41A21/481; F41A3/00; F41A3/02; F41A3/10
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) | 1951-07-20 | 1952-01-19 | 1952-07-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-07-20 | 1956-01-19 | 1956-07-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-07-20 | 1960-01-19 | 1960-07-20 | $7700.00 | Window Closed / Lapsed |