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US2986898A
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Refrigeration system with refrigerant operated pump
Assignee: Copeland Industrial LP
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Filing: 1959-10-08
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Granted: 1961-06-06
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Expires: 1979-10-08
Abstract
No abstract record available.
Inventors
- 👤 Jr Charles P Wood
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:06
CPC Classifications
F; F25; F25B; F25B41/00; F25B2400/00; F25B2400/14; F25B2400/16; Y; Y10; Y10S; Y10S62/00; Y10S62/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2265558A
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US2590741A
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US2570979A
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US2724240A
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US2836966A
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US2871673A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-06-05 | 1964-12-05 | 1965-06-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-06-05 | 1968-12-05 | 1969-06-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-06-05 | 1972-12-05 | 1973-06-06 | $7700.00 | Window Closed / Lapsed |