US2504841A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rotary compressor
Assignee: U S THERMO CONTROL CO
•
Filing: 1944-11-03
•
Granted: 1950-04-18
•
Expires: 1964-11-03
Abstract
No abstract record available.
Inventors
- 👤 Frederick M Jones
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:02
CPC Classifications
F; F04; F04B; F04B27/00; F04B27/04; F04B27/06; F04B27/0606; F04B27/0612; F04B27/0619; F04B23/00; F04B23/04; F04B23/08; F04B23/10; F04B23/103; F04B23/14; F04C; F04C18/00; F04C18/30; F04C18/34; F04C18/344
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1320485A
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US1875397A
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US1890571A
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US828111A
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US1607383A
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US2135881A
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US2089593A
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US2150912A
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US2194171A
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US2294352A
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US2249059A
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US2293369A
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US2280271A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-04-17 | 1953-10-17 | 1954-04-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-04-17 | 1957-10-17 | 1958-04-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-04-17 | 1961-10-17 | 1962-04-18 | $7700.00 | Window Closed / Lapsed |