US2500764A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fatigue testing apparatus
Assignee: Baldwin Locomotive Works
•
Filing: 1945-03-21
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Granted: 1950-03-14
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Expires: 1965-03-21
Abstract
No abstract record available.
Inventors
- 👤 William D Macgeorge
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:18
CPC Classifications
G; G01; G01N; G01N3/00; G01N3/32; G01N3/38; G01N2203/00; G01N2203/0014; G01N2203/0023
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB427989A
Cited
GB445887A
Cited
US2361396A
Cited
US2252464A
Cited
US2299424A
Cited
US2373351A
Cited
US2359245A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-03-13 | 1953-09-12 | 1954-03-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-03-13 | 1957-09-12 | 1958-03-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-03-13 | 1961-09-12 | 1962-03-14 | $7700.00 | Window Closed / Lapsed |