US3412232A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Railway car heating and ventilating systems
Assignee: Westinghouse Electric Corp
•
Filing: 1963-12-31
•
Granted: 1968-11-19
•
Expires: 1983-12-31
Abstract
No abstract record available.
Inventors
- 👤 Terry D Sanders
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 09:20
CPC Classifications
B; B60; B60L; B60L1/00; B60L2200/00; B60L2200/26
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US326411A
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US373324A
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US2201916A
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US2516879A
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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) | 1971-11-19 | 1972-05-20 | 1972-11-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-11-19 | 1976-05-20 | 1976-11-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-11-19 | 1980-05-20 | 1980-11-19 | $7700.00 | Window Closed / Lapsed |