US2712595A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Railway traffic recording apparatus
Assignee: Westinghouse Air Brake Co
•
Filing: 1951-04-04
•
Granted: 1955-07-05
•
Expires: 1971-04-04
Abstract
No abstract record available.
Inventors
- 👤 Ira F Cadman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 11:56
CPC Classifications
B; B61; B61L; B61L25/00; B61L25/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1256723A
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US2082436A
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US2082462A
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US1741936A
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US2027718A
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US2149222A
Cited
US2066309A
Cited
US2592704A
Cited
US2576038A
Cited
US2611074A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-07-04 | 1959-01-03 | 1959-07-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-07-04 | 1963-01-03 | 1963-07-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-07-04 | 1967-01-03 | 1967-07-05 | $7700.00 | Window Closed / Lapsed |