Patent US3169393A successfully refreshed from Google Patents.
US3169393A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Means and techniques for inspecting metal
Assignee: Automation Industries Inc
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Filing: 1961-04-03
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Granted: 1965-02-16
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Expires: 1981-04-03
Abstract
No abstract record available.
Inventors
- 👤 Larry O Stebbins
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 23:20
CPC Classifications
G; G01; G01N; G01N29/00; G01N29/04; G01N29/07
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
100 words
IN AN ULTRASONIC SYSTEM OF THE CHARACTER DESCRIBED WHEREIN A TEST PIECE HAS ULTRASONIC ENERGY TRANSMITTED THERETO FOR DEVELOPING RESULTING VIDEO ECHO SIGNALS AS A RESULT OF REFLECTION FROM THE FRONT AND BACK SURFACES AS WELL AS A RESULT OF INHOMOGENEITIES IN THE TEST PIECE, MEANS PRODUCING A SAWTOOTH WAVE IN RESPONSE TO ONE OF SAID ECHO SIGNALS, SAMPLING MEANS COUPLED TO SAID SAWTOOTH GENERATING MEANS, MEANS RESPONSIVE TO AN ECHO SIGNAL WHICH SUCCEEDS THAT ECHO SIGNAL WHICH OPERATES THE SAWTOOTH GENERATING MEANS FOR PRODUCING A VOLTAGE IN SAID SAMPLING MEANS, AND MEANS PRODUCING A RECORDING REPRESENTATIVE OF SAID VOLTAGE.
References Cited (Backward Citations)
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US3006184A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-02-16 | 1968-08-17 | 1969-02-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-02-16 | 1972-08-17 | 1973-02-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-02-16 | 1976-08-17 | 1977-02-16 | $7700.00 | Window Closed / Lapsed |