Patent US3028752A successfully refreshed from Google Patents.
US3028752A
Expired / Lapsed
US
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Ultrasonic testing apparatus
Assignee: Curtiss Wright Corp
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Filing: 1959-06-02
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Granted: 1962-04-10
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Expires: 1979-06-02
Abstract
No abstract record available.
Inventors
- 👤 John P Bacon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 19:34
CPC Classifications
G; G10; G10K; G10K11/00; G10K11/18; G10K11/26; G10K11/28; G01; G01N; G01N29/00; G01N29/22; G01N29/221
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2005741A
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US2459162A
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US2460274A
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US2592135A
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US2480199A
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US2467301A
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US2510947A
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US2682766A
Cited
US2927284A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-04-09 | 1965-10-09 | 1966-04-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-04-09 | 1969-10-09 | 1970-04-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-04-09 | 1973-10-09 | 1974-04-10 | $7700.00 | Window Closed / Lapsed |