US2523900A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Beacon transmitter
Assignee: Hartford National Bank and Trust Co
•
Filing: 1946-05-09
•
Granted: 1950-09-26
•
Expires: 1966-05-09
Abstract
No abstract record available.
Inventors
- 👤 Fremery Frank De
- 👤 Christiaan Jan De Lussan Sablo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 10:09
CPC Classifications
G; G01; G01S; G01S1/00; G01S1/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1910427A
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US2072962A
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US2234828A
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US2279031A
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US2288196A
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US2189317A
Cited
US2307184A
Cited
US2300999A
Cited
US2407323A
Cited
US2356071A
Cited
US2419525A
Cited
US2419984A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-09-25 | 1954-03-27 | 1954-09-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-09-25 | 1958-03-27 | 1958-09-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-09-25 | 1962-03-27 | 1962-09-26 | $7700.00 | Window Closed / Lapsed |