US2644940A
Expired / Lapsed
US
⏱️ 0.0 years remaining
System for the electromagnetic spotting of movable targets
Assignee: Radio Ind S A Soc
•
Filing: 1948-11-26
•
Granted: 1953-07-07
•
Expires: 1968-11-26
Abstract
No abstract record available.
Inventors
- 👤 France Henri Georges De
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 16:26
CPC Classifications
G; G01; G01S; G01S13/00; G01S13/02; G01S13/06; G01S13/42; G01S13/422
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2415094A
Cited
US2406316A
Cited
US2409448A
Cited
US2455673A
Cited
US2416333A
Cited
US2416088A
Cited
US2422333A
Cited
US2507211A
Cited
US2422334A
Cited
US2420334A
Cited
US2421018A
Cited
US2446024A
Cited
US2499349A
Cited
US2513279A
Cited
US2473175A
Cited
US2412111A
Cited
US2472136A
Cited
US2514617A
Cited
US2556673A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-07-06 | 1957-01-05 | 1957-07-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-07-06 | 1961-01-05 | 1961-07-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-07-06 | 1965-01-05 | 1965-07-07 | $7700.00 | Window Closed / Lapsed |