US2560265A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Airplane proximity indicator
Assignee: Individual
•
Filing: 1948-12-24
•
Granted: 1951-07-10
•
Expires: 1968-12-24
Abstract
No abstract record available.
Inventors
- 👤 Jr Charles Adler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 03:30
CPC Classifications
G; G01; G01S; G01S11/00; G01S11/02; G01S11/08; G01S3/00; G01S3/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1940547A
Cited
US2146724A
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US1989086A
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US2104075A
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US2090359A
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US2208921A
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US2231929A
Cited
US2157122A
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US2255042A
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US2378604A
Cited
US2403603A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-07-09 | 1955-01-08 | 1955-07-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-07-09 | 1959-01-08 | 1959-07-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-07-09 | 1963-01-08 | 1963-07-10 | $7700.00 | Window Closed / Lapsed |