US2961151A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rotary compressor
Assignee: Westinghouse Air Brake Co
•
Filing: 1958-05-05
•
Granted: 1960-11-22
•
Expires: 1978-05-05
Abstract
No abstract record available.
Inventors
- 👤 George W Fobian
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:56
CPC Classifications
F; F04; F04C; F04C18/00; F04C18/30; F04C18/34; F04C29/00; F04C29/02; F04C18/344
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) | 1963-11-22 | 1964-05-23 | 1964-11-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-11-22 | 1968-05-23 | 1968-11-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-11-22 | 1972-05-23 | 1972-11-22 | $7700.00 | Window Closed / Lapsed |