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Patent US2966034A successfully refreshed from Google Patents.
US2966034A
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Reciprocating flow gas expansion refrigeration apparatus and device embodying same
Assignee: Arthur D Little Inc
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Filing: 1959-06-16
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Granted: 1960-12-27
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Expires: 1979-06-16
Abstract
No abstract record available.
Inventors
- 👤 William E Gifford
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 15:59
CPC Classifications
F; F25; F25B; F25B9/00; F25B9/14; F25B2309/00; F25B2309/003; F25J; F25J2270/00; F25J2270/90; F25J2270/908; F25J2270/91
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2856756A
Cited
US2907169A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-12-27 | 1964-06-27 | 1964-12-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-12-27 | 1968-06-27 | 1968-12-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-12-27 | 1972-06-27 | 1972-12-27 | $7700.00 | Window Closed / Lapsed |