US2656459A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Wide frequency coverage beacon receiver
Assignee: Individual
•
Filing: 1945-10-30
•
Granted: 1953-10-20
•
Expires: 1965-10-30
Abstract
No abstract record available.
Inventors
- 👤 John H Tinlot
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 11:18
CPC Classifications
H; H04; H04B; H04B1/00; H04B1/06; H04B1/16; H04B1/26; G; G01; G01S; G01S13/00; G01S13/74; G01S13/76; G01S13/767
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1830242A
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US1969903A
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US2055737A
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GB414769A
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US2038938A
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US2026759A
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US2228815A
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US2269654A
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US2465341A
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US2400133A
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US2460900A
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US2448055A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-10-19 | 1957-04-20 | 1957-10-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-10-19 | 1961-04-20 | 1961-10-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-10-19 | 1965-04-20 | 1965-10-20 | $7700.00 | Window Closed / Lapsed |