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US3174127A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Echo sounding
Assignee: S Smith and Sons Ltd
•
Filing: 1961-05-12
•
Granted: 1965-03-16
•
Expires: 1981-05-12
Abstract
No abstract record available.
Inventors
- 👤 Haslett Roy William George
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:30
CPC Classifications
G; G01; G01S; G01S15/00; G01S15/02; G01S15/87; G01S15/88; G01S15/96; Y; Y10; Y10S; Y10S367/00; Y10S367/90
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
65 words
ECHO SOUNDING APPARATUS FOR DETERMINING AT LEAST APPROXIMATELY THE LENGTH OF A SUBMERGED TARGET COMPRISING, TRANSMISSION MEANS FOR TRANSMITTING INTO WATER ACOUSTIC WAVES AT TWO DIFFERENT FREQUENCIES ALONG ADJACENT SUBSTANTIALLY PARALLEL PATHS TOWARD SAID TARGET, RECEIVER MEANS RECEIVING ECHO WAVES AT EACH OF SAID FREQUENCIES AFTER REFLECTION FROM SAID TARGET, AND MEANS COUPLED TO SAID RECEIVER MEANS AND RESPONSIVE TO THE RATIO OF THE AMPLI-
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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) | 1968-03-15 | 1968-09-14 | 1969-03-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-03-15 | 1972-09-14 | 1973-03-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-03-15 | 1976-09-14 | 1977-03-16 | $7700.00 | Window Closed / Lapsed |