US2431257A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Controlling motion by means of voltage as applied to gunnery trainers
Assignee: RCA Corp
•
Filing: 1943-12-23
•
Granted: 1947-11-18
•
Expires: 1963-12-23
Abstract
No abstract record available.
Inventors
- 👤 Edward W Kellogg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 17:56
CPC Classifications
F; F41; F41G; F41G3/00; F41G3/26; F41G3/2616; F41G3/2694
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US450985A
Cited
US499544A
Cited
US1677990A
Cited
US2113164A
Cited
US2115834A
Cited
US2113436A
Cited
US2151718A
Cited
US2172064A
Cited
US2286571A
Cited
US2347563A
Cited
US2354391A
Cited
US2367746A
Cited
US2381478A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-11-17 | 1951-05-19 | 1951-11-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-11-17 | 1955-05-19 | 1955-11-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-11-17 | 1959-05-19 | 1959-11-18 | $7700.00 | Window Closed / Lapsed |