Patent US2859349A successfully refreshed from Google Patents.
US2859349A
Expired / Lapsed
US
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Radiological examination of hollow articles
Assignee: Phillips Petroleum Co
•
Filing: 1955-08-01
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Granted: 1958-11-04
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Expires: 1975-08-01
Abstract
No abstract record available.
Inventors
- 👤 Russell G Bradley
- 👤 Francis W Crawford
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 23:35
CPC Classifications
G; G01; G01B; G01B15/00; G01B15/04; G01B15/045
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1648746A
Cited
US1806375A
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US2277756A
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US2433718A
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US2412174A
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US2607012A
Cited
US2702864A
Cited
US2723350A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-11-03 | 1962-05-05 | 1962-11-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-11-03 | 1966-05-05 | 1966-11-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-11-03 | 1970-05-05 | 1970-11-04 | $7700.00 | Window Closed / Lapsed |