US2655166A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Detector valve for hot bearing indicating systems
Assignee: PENNSYLVAHIA RAILROAD Co
•
Filing: 1950-04-29
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Granted: 1953-10-13
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Expires: 1970-04-29
Abstract
No abstract record available.
Inventors
- 👤 Carleton K Steins
- 👤 William M Keller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 09:31
CPC Classifications
B; B61; B61K; B61K9/00; B61K9/04; Y; Y10; Y10S; Y10S116/00; Y10S116/38; Y10T; Y10T137/00; Y10T137/1624; Y10T137/1797
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1105888A
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US1744977A
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US1877007A
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US1983514A
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GB567120A
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US2420924A
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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) | 1956-10-12 | 1957-04-13 | 1957-10-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-10-12 | 1961-04-13 | 1961-10-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-10-12 | 1965-04-13 | 1965-10-13 | $7700.00 | Window Closed / Lapsed |