US2902837A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Air conditioning system for railway cars and unit-mounting means therefor
Assignee: Waukesha Motor Co
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Filing: 1956-12-06
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Granted: 1959-09-08
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Expires: 1976-12-06
Abstract
No abstract record available.
Inventors
- 👤 Newton H Willis
- 👤 Melvin E Erickson
- 👤 James K Armstrong
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 04:07
CPC Classifications
F; F24; F24F; F24F3/00; F24F3/044; B; B61; B61D; B61D27/00; B61D27/0072; B61D27/0081
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-09-07 | 1963-03-09 | 1963-09-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-09-07 | 1967-03-09 | 1967-09-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-09-07 | 1971-03-09 | 1971-09-08 | $7700.00 | Window Closed / Lapsed |