US2537574A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Distance finder with automatic range tracking
Assignee: RCA Corp
•
Filing: 1947-09-19
•
Granted: 1951-01-09
•
Expires: 1967-09-19
Abstract
No abstract record available.
Inventors
- 👤 Murray G Crosby
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 04:54
CPC Classifications
G; G01; G01S; G01S13/00; G01S13/66; G01S13/70; G01S13/02; G01S13/06; G01S13/08; G01S13/32; G01S13/36
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1756462A
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US2253975A
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US2198113A
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US2248727A
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US2345933A
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US2414469A
Cited
US2403975A
Cited
US2480829A
Cited
US2422074A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-01-08 | 1954-07-10 | 1955-01-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-01-08 | 1958-07-10 | 1959-01-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-01-08 | 1962-07-10 | 1963-01-09 | $7700.00 | Window Closed / Lapsed |