Patent US2444246A successfully refreshed from Google Patents.
US2444246A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gun turret
Assignee: Electric Boat Corp
•
Filing: 1942-11-20
•
Granted: 1948-06-29
•
Expires: 1962-11-20
Abstract
No abstract record available.
Inventors
- 👤 Chase Irwin
- 👤 Darsie Burns
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 13:02
CPC Classifications
F; F41; F41A; F41A9/00; F41A9/54; F41A19/00; F41A19/55; F41A27/00; F41A27/06; F41A27/18
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US480215A
Cited
US1387678A
Cited
US1385755A
Cited
US2029692A
Cited
GB424002A
Cited
FR787298A
Cited
GB431714A
Cited
US2066326A
Cited
US2181819A
Cited
FR800959A
Cited
US2182722A
Cited
GB489208A
Cited
FR829165A
Cited
US2233918A
Cited
US2271445A
Cited
US2396529A
Cited
US2307582A
Cited
US2350662A
Cited
US2300602A
Cited
US2322775A
Cited
US2291070A
Cited
US2354153A
Cited
US2323430A
Cited
US2355286A
Cited
US2392106A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-06-29 | 1951-12-29 | 1952-06-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-06-29 | 1955-12-29 | 1956-06-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-06-29 | 1959-12-29 | 1960-06-29 | $7700.00 | Window Closed / Lapsed |