US3178677A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sound transmission systems
Assignee: Individual
•
Filing: 1961-05-18
•
Granted: 1965-04-13
•
Expires: 1981-05-18
Abstract
No abstract record available.
Inventors
- 👤 Eugene C Hadley
- 👤 George F Hoke
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 05:24
CPC Classifications
G; G01; G01V; G01V1/00; G01V1/001; G08; G08B; G08B1/00; G08B1/08
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
94 words
IN AN ULTRASONIC DETECTING AND RANGING SYSTEM, AN ARRANGEMENT FOR REPETITIVEL GENERATING AN ACOUSTIC SIGNAL OF CONTROLLED DURATION COMPRISING RECEIVING AND TRANSMITTING TRANSDUCERS IN COUPLED RELATIONSHIP, THE RECEIVING TRANSDUCER BEING POSITIONED TO RESPOND TO RANDOM ACOUSTIC WAVES IN AND ADJACENT MEDIUM, AMPLIFYING MEANS INTERCONNECTING THE RECEIVING AND TRANSMITTING TRANSDUCERS TO COMPLETE A FEEDBACK LOOP THEREWITH, DISABLING MEANS CONNECTED TO THE FEEDBACK LOOP FOR DISBLING A PORTION OF THE AMPLIFYING MEANS, AND MEANS FOR REPETITIVELY REMOVING THE DISABLING MEANS TO PERMIT THE RAPID BUILDUP OF OSCILLATIONS APPLIED TO THE TRANSMITTING TRANSDUCER FOR A SELECTED INTERVAL.
References Cited (Backward Citations)
US2098287A
Cited
US2257763A
Cited
US2400796A
Cited
US2232096A
Cited
US2400309A
Cited
US3031644A
Cited
US2531187A
Cited
US2476902A
Cited
US2576903A
Cited
US2750574A
Cited
US2802178A
Cited
US2948879A
Cited
US3028578A
Cited
US2919313A
Cited
US3029317A
Cited
US3056928A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-04-12 | 1968-10-12 | 1969-04-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-04-12 | 1972-10-12 | 1973-04-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-04-12 | 1976-10-12 | 1977-04-13 | $7700.00 | Window Closed / Lapsed |