Patent US2478839A successfully refreshed from Google Patents.
US2478839A
Expired / Lapsed
US
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Instrument for controlling the firing of ordnance
Assignee: Unisys Corp
•
Filing: 1932-03-31
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Granted: 1949-08-09
•
Expires: 1952-03-31
Abstract
No abstract record available.
Inventors
- 👤 Elliott P Ross
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 16:23
CPC Classifications
F; F41; F41G; F41G5/00; F41G5/14; F41G5/16; Y; Y10; Y10T; Y10T74/00; Y10T74/12; Y10T74/1221; Y10T74/1229
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) | 1952-08-08 | 1953-02-07 | 1953-08-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-08-08 | 1957-02-07 | 1957-08-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-08-08 | 1961-02-07 | 1961-08-09 | $7700.00 | Window Closed / Lapsed |