Patent US3526829A successfully refreshed from Google Patents.
US3526829A
Expired / Lapsed
US
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Pulsed eddy current apparatus for nondestructive testing of resistance type welds
Assignee: Old Carco LLC
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Filing: 1968-04-24
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Granted: 1970-09-01
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Expires: 1988-04-24
Abstract
No abstract record available.
Inventors
- 👤 Gardiner A Noble
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 13:52
CPC Classifications
G; G01; G01N; G01N27/00; G01N27/72; G01N27/82; G01N27/90; G01N27/904; G01N27/9046
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB160855A
Cited
GB492501A
Cited
US3229197A
Cited
US3340466A
Cited
US3229198A
Cited
US3315155A
Cited
US3361960A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-08-31 | 1974-03-02 | 1974-09-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-08-31 | 1978-03-02 | 1978-09-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-08-31 | 1982-03-02 | 1982-09-01 | $7700.00 | Window Closed / Lapsed |