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US2770966A
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Apparatus for non-destructive testing of solid bodies by acoustic oscillations
Assignee: Kelvin Hughes Ltd
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Filing: 1952-12-12
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Granted: 1956-11-20
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Expires: 1972-12-12
Abstract
No abstract record available.
Inventors
- 👤 Halliday William
- 👤 Jefferys Herbert Martin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:32
CPC Classifications
G; G01; G01N; G01N29/00; G01N29/04; G01N29/06; G01N29/0609; G01N29/0618; G01N29/0636
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2494990A
Cited
AT170212B
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-11-20 | 1960-05-21 | 1960-11-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-11-20 | 1964-05-21 | 1964-11-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-11-20 | 1968-05-21 | 1968-11-20 | $7700.00 | Window Closed / Lapsed |