US3050988A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ultrasonic testing
Assignee: S Smith and Sons Ltd
•
Filing: 1959-02-13
•
Granted: 1962-08-28
•
Expires: 1979-02-13
Abstract
No abstract record available.
Inventors
- 👤 Gordon George Andrew Douglas
- 👤 Taylor Harold William
- 👤 Wood John Malcolm Lester
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 18:43
CPC Classifications
G; G01; G01N; G01N29/00; G01N29/36; G01N29/38; G01N2291/00; G01N2291/04; G01N2291/044; G01N2291/10; G01N2291/101; G01N2291/104; Y; Y10; Y10S; Y10S73/00; Y10S73/90
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2640190A
Cited
US2667063A
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US2618968A
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US2661714A
Cited
US2893239A
Cited
US2839916A
Cited
US2921466A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-08-27 | 1966-02-26 | 1966-08-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-08-27 | 1970-02-26 | 1970-08-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-08-27 | 1974-02-26 | 1974-08-28 | $7700.00 | Window Closed / Lapsed |