US2477574A
Expired / Lapsed
US
⏱️ 0.0 years remaining
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Assignee: Unisys Corp
•
Filing: 1947-07-21
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Granted: 1949-08-02
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Expires: 1967-07-21
Abstract
No abstract record available.
Inventors
- 👤 Frederick D Braddon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:02
CPC Classifications
H; H01; H01Q; H01Q1/00; H01Q1/12; H01Q1/18; G; G01; G01C; G01C21/00; G01C21/10; G01C21/12; G01C21/16; G01C21/18; Y; Y10; Y10T; Y10T74/00; Y10T74/12; Y10T74/1229; Y10T74/1232; Y10T74/1254; Y10T74/1261; Y10T74/1275; Y10T74/20; Y10T74/20012; Y10T74/20201
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1141099A
Cited
US1545812A
Cited
US1573343A
Cited
US1840104A
Cited
US1781746A
Cited
US1932210A
Cited
US2433837A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-08-01 | 1953-01-31 | 1953-08-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-08-01 | 1957-01-31 | 1957-08-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-08-01 | 1961-01-31 | 1961-08-02 | $7700.00 | Window Closed / Lapsed |