US2604620A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Radio navigation system
Assignee: Individual
•
Filing: 1946-10-04
•
Granted: 1952-07-22
•
Expires: 1966-10-04
Abstract
No abstract record available.
Inventors
- 👤 Brunson S Mccutchen
- 👤 Charles W Mccutchen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:53
CPC Classifications
G; G01; G01S; G01S11/00; G01S11/02; G01S11/10; G01S1/00; G01S1/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1495616A
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US1639667A
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US1750668A
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US1995285A
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DE546000C
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US2003240A
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US1907471A
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US1981884A
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US2109475A
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US2144203A
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US2198113A
Cited
US2408773A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-07-22 | 1956-01-21 | 1956-07-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-07-22 | 1960-01-21 | 1960-07-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-07-22 | 1964-01-21 | 1964-07-22 | $7700.00 | Window Closed / Lapsed |