US3497728A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ultrasonic inspection apparatus
Assignee: Standard Oil Co
•
Filing: 1967-03-20
•
Granted: 1970-02-24
•
Expires: 1987-03-20
Abstract
No abstract record available.
Inventors
- 👤 Bernard Ostrofsky
- 👤 Jack N Bergman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 09:42
CPC Classifications
G; G01; G01B; G01B17/00; G01B17/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2545309A
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US2956185A
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US3233213A
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US3185868A
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US3242723A
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US3175106A
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US3255626A
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US3272000A
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US3239801A
Cited
US3337843A
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US3393331A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-02-23 | 1973-08-25 | 1974-02-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-02-23 | 1977-08-25 | 1978-02-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-02-23 | 1981-08-25 | 1982-02-24 | $7700.00 | Window Closed / Lapsed |