US2435236A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Superacoustic compressor
Assignee: Westinghouse Electric Corp
•
Filing: 1943-11-23
•
Granted: 1948-02-03
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Expires: 1963-11-23
Abstract
No abstract record available.
Inventors
- 👤 Arnold H Redding
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 21:10
CPC Classifications
F; F04; F04D; F04D21/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US408864A
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US1463110A
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US1552637A
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FR590196A
Cited
US1997506A
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US2134921A
Cited
GB500402A
Cited
US2224519A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-02-02 | 1951-08-04 | 1952-02-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-02-02 | 1955-08-04 | 1956-02-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-02-02 | 1959-08-04 | 1960-02-03 | $7700.00 | Window Closed / Lapsed |