Patent US2947165A successfully refreshed from Google Patents.
US2947165A
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US
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Method and apparatus for testing pipe
Assignee: United States Steel Corp
•
Filing: 1957-09-18
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Granted: 1960-08-02
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Expires: 1977-09-18
Abstract
No abstract record available.
Inventors
- 👤 George J Kirchner
- 👤 Andrew F Kritscher
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 17:54
CPC Classifications
B; B23; B23Q; B23Q7/00; B23Q7/001; G; G01; G01M; G01M3/00; G01M3/02; G01M3/26; G01M3/28; G01M3/2846
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US527200A
Cited
US580685A
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US716217A
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US856074A
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US2532954A
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US2558208A
Cited
US2565460A
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US2633739A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-08-02 | 1964-02-01 | 1964-08-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-08-02 | 1968-02-01 | 1968-08-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-08-02 | 1972-02-01 | 1972-08-02 | $7700.00 | Window Closed / Lapsed |