US2610319A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Radio echo apparatus
Assignee: Individual
•
Filing: 1942-11-17
•
Granted: 1952-09-09
•
Expires: 1962-11-17
Abstract
No abstract record available.
Inventors
- 👤 Robert M Page
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 03:03
CPC Classifications
G; G01; G01S; G01S7/00; G01S7/02; G01S7/04; G01S7/06; G01S7/10; G01S7/12; G01S7/14
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2231929A
Cited
US2241809A
Cited
GB520778A
Cited
US2189549A
Cited
US2300189A
Cited
US2408414A
Cited
US2295412A
Cited
US2468032A
Cited
US2471516A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-09-09 | 1956-03-10 | 1956-09-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-09-09 | 1960-03-10 | 1960-09-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-09-09 | 1964-03-10 | 1964-09-09 | $7700.00 | Window Closed / Lapsed |