US2446552A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Compressor
Assignee: Westinghouse Electric Corp
•
Filing: 1943-09-27
•
Granted: 1948-08-10
•
Expires: 1963-09-27
Abstract
No abstract record available.
Inventors
- 👤 Arnold H Redding
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 08:52
CPC Classifications
F; F04; F04D; F04D17/00; F04D17/02; F04D17/025
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US859938A
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US901228A
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GB191103740A
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US1497408A
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US1529925A
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Cited
US2168726A
Cited
US2292288A
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GB505078A
Cited
US2216731A
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US2274743A
Cited
US2321276A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-08-10 | 1952-02-09 | 1952-08-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-08-10 | 1956-02-09 | 1956-08-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-08-10 | 1960-02-09 | 1960-08-10 | $7700.00 | Window Closed / Lapsed |