Patent US2288802A successfully refreshed from Google Patents.
Patent US2912831A successfully refreshed from Google Patents.
US2912831A
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Refrigerant flow control for a refrigeration system
Assignee: Carrier Corp
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Filing: 1955-02-09
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Granted: 1959-11-17
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Expires: 1975-02-09
Abstract
No abstract record available.
Inventors
- 👤 Everett P Palmatier
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 21:08
CPC Classifications
F; F25; F25B; F25B41/00; F25B2341/00; F25B2341/001; F25B2341/0014; F25B2400/00; F25B2400/05; F25B2400/052; Y; Y10; Y10S; Y10S62/00; Y10S62/17
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) | 1962-11-16 | 1963-05-18 | 1963-11-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-11-16 | 1967-05-18 | 1967-11-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-11-16 | 1971-05-18 | 1971-11-17 | $7700.00 | Window Closed / Lapsed |