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US2709967A
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Cooling and ventilating system for generating electric locomotives
Assignee: Motors Liquidation Co
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Filing: 1949-08-13
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Granted: 1955-06-07
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Expires: 1969-08-13
Abstract
No abstract record available.
Inventors
- 👤 Richard M Dilworth
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 14:57
CPC Classifications
B; B61; B61C; B61C5/00; B61C5/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1987456A
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US1708558A
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US1804334A
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US2009823A
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US2230580A
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US2170791A
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US2205266A
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US2205280A
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US2423929A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-06-06 | 1958-12-06 | 1959-06-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-06-06 | 1962-12-06 | 1963-06-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-06-06 | 1966-12-06 | 1967-06-07 | $7700.00 | Window Closed / Lapsed |