US3153236A
Expired / Lapsed
US
⏱️ 0.0 years remaining
System and method for detection
Assignee: Individual
•
Filing: 1951-01-22
•
Granted: 1964-10-13
•
Expires: 1971-01-22
Abstract
No abstract record available.
Inventors
- 👤 Rines Robert Harvey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:23
CPC Classifications
G; G01; G01S; G01S13/00; G01S13/02; G01S13/04
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
75 words
A SYSTEM FOR DETECTING UNDER-WATER SUBMARINES HAVING, IN COMBINATION, MEANS FOR RADIATING RADIO WAVES ALONG THE SURFACE OF THE WATER CONTAINING A SUBMARINE THAT IS EMITTING SONIC OR ULTRASONIC VIBRATIONS OF KNOWN FREQUENCIES, MEANS FOR RECEIVING THE RADIO WAVES PROPAGATED ALONG THE SURFACE OF THE WATER IN THE VICINITY OF THE SUBMARINE MEANS FOR ANALYZING THE RECEIVED WAVES TO DETECT MODULATION THEREUPON OF THE KNOWN SONIC OR ULTRANSONIC FREQUENCIES OF VIBRATION AND MEANS FOR INDICAT-
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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) | 1967-10-13 | 1968-04-13 | 1968-10-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-10-13 | 1972-04-13 | 1972-10-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-10-13 | 1976-04-13 | 1976-10-13 | $7700.00 | Window Closed / Lapsed |