US2622131A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Portable rail flaw detector
Assignee: TELEDETECTOR Inc
•
Filing: 1945-11-13
•
Granted: 1952-12-16
•
Expires: 1965-11-13
Abstract
No abstract record available.
Inventors
- 👤 Chester W Mckee
- 👤 Richard W Mckee
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 09:55
CPC Classifications
B; B60; B60F; B60F1/00; B60F1/04; B61; B61K; B61K9/00; B61K9/08; B61K9/10; B60F2301/00; B60F2301/12
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2297879A
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US2317721A
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US2276011A
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US2388683A
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US2392168A
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US2425857A
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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) | 1955-12-16 | 1956-06-16 | 1956-12-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-12-16 | 1960-06-16 | 1960-12-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-12-16 | 1964-06-16 | 1964-12-16 | $7700.00 | Window Closed / Lapsed |