US2605394A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High-frequency radio beacon signaling
Assignee: Individual
•
Filing: 1943-10-02
•
Granted: 1952-07-29
•
Expires: 1963-10-02
Abstract
No abstract record available.
Inventors
- 👤 Stanley N Van Voorhis
- 👤 John S Kirby-Smith
- 👤 Kuper James B Horner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 15:55
CPC Classifications
G; G01; G01S; G01S13/00; G01S13/74; G01S13/76; G01S13/78
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2439387A
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US2414785A
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US2416336A
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US2457137A
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US2387685A
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US2352254A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-07-29 | 1956-01-28 | 1956-07-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-07-29 | 1960-01-28 | 1960-07-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-07-29 | 1964-01-28 | 1964-07-29 | $7700.00 | Window Closed / Lapsed |