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Patent US2666192A successfully refreshed from Google Patents.
US2666192A
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Apparatus for determining the direction of underwater targets
Assignee: Individual
•
Filing: 1944-07-27
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Granted: 1954-01-12
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Expires: 1964-07-27
Abstract
No abstract record available.
Inventors
- 👤 Frederick V Hunt
- 👤 Schuck Oscar Hugo
- 👤 Charles R Rutherford
- 👤 Hathaway Jarrett Lewis
- 👤 Jr Arthur Nelson Butz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 19:10
CPC Classifications
G; G01; G01S; G01S1/00; G01S1/72; Y; Y10; Y10S; Y10S367/00; Y10S367/90
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2167492A
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US2143035A
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US2213273A
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US2166991A
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US2251708A
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US2282402A
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US2213874A
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US2355502A
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US2467368A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-01-11 | 1957-07-13 | 1958-01-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-01-11 | 1961-07-13 | 1962-01-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-01-11 | 1965-07-13 | 1966-01-12 | $7700.00 | Window Closed / Lapsed |