US2237570A
Expired / Lapsed
US
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Method of probing a weld
Assignee: FREDERICK M BOWERS
•
Filing: 1938-10-07
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Granted: 1941-04-08
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Expires: 1958-10-07
Abstract
No abstract record available.
Inventors
- 👤 Edmond B Maillart
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 22:18
CPC Classifications
G; G01; G01N; G01N3/00; B; B23; B23D; B23D57/00; B23Q; B23Q1/00; B23Q1/25; B23Q1/44; B23Q1/50; B23Q1/54; B23Q1/5406; B23Q1/5412; B28; B28D; B28D1/00; B28D1/30; G01N1/00; G01N1/02; G01N1/04; G01N2203/00; G01N2203/02; G01N2203/026; G01N2203/0296; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49764
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1944-04-07 | 1944-10-07 | 1945-04-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1948-04-07 | 1948-10-07 | 1949-04-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1952-04-07 | 1952-10-07 | 1953-04-08 | $7700.00 | Window Closed / Lapsed |