US3616682A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ultrasonic nondestructive thickness gauge
Assignee: The Ohio State University
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Filing: 1968-09-23
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Granted: 1971-11-02
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Expires: 1988-09-23
Abstract
Abstract THE INVENTION IS FOR AN ULTRASONIC TRANSMITTING AND RECEIVING DEVICE FOR THE NONDESTRUCTIVE MEASURING OF THE THICKNESS OF HETEROGENEOUS MATERIALS.
Inventors
- 👤 Matthew J Golis
- 👤 Robert C Mcmaster
- 👤 Gary L Cooper
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 22:03
CPC Classifications
G; G10; G10K; G10K11/00; G10K11/18; G10K11/26; G10K11/32; B; B06; B06B; B06B1/00; B06B1/02; B06B1/06; B06B1/0607; B06B1/0622; G01; G01B; G01B17/00; G01B17/02
Claims Analysis
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-11-01 | 1975-05-03 | 1975-11-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-11-01 | 1979-05-03 | 1979-11-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-11-01 | 1983-05-03 | 1983-11-02 | $7700.00 | Window Closed / Lapsed |