US3046392A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Control circuits
Assignee: Westinghouse Air Brake Co
•
Filing: 1958-03-03
•
Granted: 1962-07-24
•
Expires: 1978-03-03
Abstract
No abstract record available.
Inventors
- 👤 Philip H Luft
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 15:39
CPC Classifications
B; B61; B61L; B61L29/00; B61L29/08; B61L29/18; B61L29/22; B61L29/226
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1094894A
Cited
US1778457A
Cited
US1718736A
Cited
US2258962A
Cited
US2268193A
Cited
US2351538A
Cited
US2896068A
Cited
US2930888A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-07-23 | 1966-01-22 | 1966-07-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-07-23 | 1970-01-22 | 1970-07-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-07-23 | 1974-01-22 | 1974-07-24 | $7700.00 | Window Closed / Lapsed |