Patent US2530890A successfully refreshed from Google Patents.
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 10:18
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
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US734779A
Cited
US1828748A
Cited
US1723531A
Cited
US1951875A
Cited
US1970630A
Cited
US2410831A
Cited
US2415678A
Cited
US2407310A
Cited
US2415679A
Cited
US2410827A
Cited
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 |