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Patent US2472176A successfully refreshed from Google Patents.
US2472176A
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Throttle control device for steam locomotives
Assignee: Individual
•
Filing: 1945-04-16
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Granted: 1949-06-07
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Expires: 1965-04-16
Abstract
No abstract record available.
Inventors
- 👤 Stern Charles
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 18:51
CPC Classifications
B; B61; B61C; B61C1/00; B61C1/10; Y; Y10; Y10T; Y10T137/00; Y10T137/6851; Y10T137/6855; Y10T137/6858; Y10T137/6862; Y10T74/00; Y10T74/20; Y10T74/20576; Y10T74/20582; Y10T74/2063
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1039170A
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US1208753A
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US1520233A
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US1720075A
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US1666225A
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US1812978A
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US2324876A
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US2361103A
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US2369690A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-06-06 | 1952-12-06 | 1953-06-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-06-06 | 1956-12-06 | 1957-06-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-06-06 | 1960-12-06 | 1961-06-07 | $7700.00 | Window Closed / Lapsed |