US3021706A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ultrasonic materials testing system
Assignee: Curtiss Wright Corp
•
Filing: 1957-07-02
•
Granted: 1962-02-20
•
Expires: 1977-07-02
Abstract
No abstract record available.
Inventors
- 👤 Edward G Cook
- 👤 William I Shepley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 21:44
CPC Classifications
G; G01; G01V; G01V1/00; G01V1/40; G01V1/52; G01N; G01N29/00; G01N29/22; G01N29/26; G01N29/265
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2596023A
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US2527986A
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US2631270A
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US2648056A
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US2700895A
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US2820214A
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US2628335A
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US2708485A
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US2879126A
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US2836059A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-02-19 | 1965-08-21 | 1966-02-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-02-19 | 1969-08-21 | 1970-02-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-02-19 | 1973-08-21 | 1974-02-20 | $7700.00 | Window Closed / Lapsed |