US2688937A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Torque transmission arrangement for railway vehicles
Assignee: Allis Chalmers Corp
•
Filing: 1949-07-28
•
Granted: 1954-09-14
•
Expires: 1969-07-28
Abstract
No abstract record available.
Inventors
- 👤 Walter A Giger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 00:36
CPC Classifications
B; B61; B61C; B61C9/00; B61C9/08; B61C9/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1055598A
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US1851068A
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FR732466A
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US1984958A
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FR844968A
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US2299099A
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US2385642A
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US2527281A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-09-13 | 1958-03-15 | 1958-09-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-09-13 | 1962-03-15 | 1962-09-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-09-13 | 1966-03-15 | 1966-09-14 | $7700.00 | Window Closed / Lapsed |