US2530890A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Radar antenna driving mechanism
Assignee: AT&T Inc
•
Filing: 1947-07-26
•
Granted: 1950-11-21
•
Expires: 1967-07-26
Abstract
No abstract record available.
Inventors
- 👤 Charles F Mattke
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 03:48
CPC Classifications
H; H01; H01Q; H01Q3/00; H01Q3/02; H01Q3/08; Y; Y10; Y10T; Y10T74/00; Y10T74/18; Y10T74/18856
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US734779A
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US1828748A
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US1951875A
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US1970630A
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US2410831A
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US2407310A
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US2415679A
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US2410827A
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US2368159A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-11-20 | 1954-05-22 | 1954-11-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-11-20 | 1958-05-22 | 1958-11-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-11-20 | 1962-05-22 | 1962-11-21 | $7700.00 | Window Closed / Lapsed |