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US2639316A
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US
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Railroad fissure detector car
Assignee: TELEDETECTOR Inc
•
Filing: 1949-01-24
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Granted: 1953-05-19
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Expires: 1969-01-24
Abstract
No abstract record available.
Inventors
- 👤 Chester W Mckee
- 👤 Richard W Mckee
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 16:16
CPC Classifications
B; B61; B61K; B61K9/00; B61K9/08; B61K9/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2109455A
Cited
US2297879A
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US2276011A
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US2388683A
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US2461253A
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US2507683A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-05-18 | 1956-11-17 | 1957-05-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-05-18 | 1960-11-17 | 1961-05-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-05-18 | 1964-11-17 | 1965-05-19 | $7700.00 | Window Closed / Lapsed |