US2970435A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Compressor flow control mechanism
Assignee: Westinghouse Electric Corp
•
Filing: 1957-11-27
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Granted: 1961-02-07
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Expires: 1977-11-27
Abstract
No abstract record available.
Inventors
- 👤 Donald F Winters
- 👤 Gerald W Niemeyer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 22:13
CPC Classifications
F; F04; F04D; F04D27/00; F04D27/02; F04D27/0261; F04D27/0246; Y; Y02; Y02B; Y02B30/00; Y02B30/70
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) | 1964-02-07 | 1964-08-08 | 1965-02-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-02-07 | 1968-08-08 | 1969-02-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-02-07 | 1972-08-08 | 1973-02-07 | $7700.00 | Window Closed / Lapsed |