Patent US2846288A successfully refreshed from Google Patents.
US2846288A
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Depth sounding devices
Assignee: Raytheon Co
•
Filing: 1954-02-23
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Granted: 1958-08-05
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Expires: 1974-02-23
Abstract
No abstract record available.
Inventors
- 👤 Robert A Fryklnnd
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 00:47
CPC Classifications
G; G01; G01S; G01S1/00; G01S1/72
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2212970A
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US2278919A
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US2437243A
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US2613124A
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US2597199A
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US2557196A
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US2627448A
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US2633405A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-08-04 | 1962-02-03 | 1962-08-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-08-04 | 1966-02-03 | 1966-08-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-08-04 | 1970-02-03 | 1970-08-05 | $7700.00 | Window Closed / Lapsed |