US2501236A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Depth sounding recorder
Assignee: Bendix Aviation Corp
•
Filing: 1945-02-26
•
Granted: 1950-03-21
•
Expires: 1965-02-26
Abstract
No abstract record available.
Inventors
- 👤 William R Ryan
- 👤 Levine Sol
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 18:27
CPC Classifications
G; G01; G01S; G01S1/00; G01S1/72
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1613520A
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US1667540A
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US2108089A
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US2075285A
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US2198171A
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US2147668A
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US2144843A
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US2309956A
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US2268808A
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US2350994A
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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) | 1953-03-20 | 1953-09-19 | 1954-03-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-03-20 | 1957-09-19 | 1958-03-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-03-20 | 1961-09-19 | 1962-03-21 | $7700.00 | Window Closed / Lapsed |