US3555889A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ultrasonic inspection apparatus
Assignee: STAVELEY INSTRUMENTS Inc 421 NORTH QUAY STREET KENNEWICK WA 99336 A CORP OF WA
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Filing: 1967-06-07
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Granted: 1971-01-19
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Expires: 1987-06-07
Abstract
Abstract A PLURALITY OF TRANSDUCERS ARE ADAPTED TO BE COUPLED TO A WORKPIECE AT A PLURALITY OF DIFFERENT LOCATIONS. ALL TRANSDUCERS ARE SIMULTANEOUSLY ENERGIZED BY A TRANSMITTER AND SEQUENTIALLY GATED TO A RECEIVER.
Inventors
- 👤 Frederick G Weighart
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 11:21
CPC Classifications
G; G01; G01N; G01N29/00; G01N29/36; G01N29/38; G01N2291/00; G01N2291/04; G01N2291/044; G01N2291/10; G01N2291/105
Claims Analysis
Total Claims: 0
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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) | 1974-01-18 | 1974-07-20 | 1975-01-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-18 | 1978-07-20 | 1979-01-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-18 | 1982-07-20 | 1983-01-19 | $7700.00 | Window Closed / Lapsed |