US3278891A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sonar receiver processing equipment
Assignee: General Electric Co
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Filing: 1961-11-27
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Granted: 1966-10-11
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Expires: 1981-11-27
Abstract
No abstract record available.
Inventors
- 👤 Ralph R Cowdery
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 15:11
CPC Classifications
G; G01; G01S; G01S3/00; G01S3/80; G01S3/8006
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
43 words
IN A SONAR RECEIVER, MEANS FOR RECEIVING A SOUND WAVE AND CONVERTING IT TO ELECTRICAL SIGNALS, MULTI-CHANNEL RECORDING MEANS CONNECTED FOR RECORDING SAID SIGNALS AND FOR PLAYING BACK SAID SIGNALS AT AN INCREASED SPEED TO PROVIDE NEW ELECTRICAL SIGNALS OF SHORTER WAVE LENGTH,
Claim 2
Dependent Claim
43 words
IN A SONAR RECEIVER, MEANS FOR RECEIVING A SOUND WAVE AND CONVERTING IT TO ELECTRICAL SIGNALS, MULTI-CHANNEL RECORDING MEANS CONNECTED FOR RECORDING SAID SIGNALS AND FOR PLAYING BACK SAID SIGNALS AT AN INCREASED SPEED TO PROVIDE NEW ELECTRICAL SIGNALS OF SHORTER WAVE LENGTH,
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-10-10 | 1970-04-11 | 1970-10-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-10-10 | 1974-04-11 | 1974-10-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-10-10 | 1978-04-11 | 1978-10-11 | $7700.00 | Window Closed / Lapsed |