Patent US2498861A successfully refreshed from Google Patents.
US2498861A
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Reverse cycle refrigerating system
Assignee: Old Carco LLC
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Filing: 1948-02-25
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Granted: 1950-02-28
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Expires: 1968-02-25
Abstract
No abstract record available.
Inventors
- 👤 Alwin B Newton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 21:51
CPC Classifications
F; F25; F25B; F25B49/00; F25B49/02; F25B49/022; F25B13/00; F25B2600/00; F25B2600/02; F25B2600/026; F25B2600/0262; F25B2700/00; F25B2700/21; F25B2700/2106; Y; Y10; Y10S; Y10S236/00; Y10S236/01
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
CH173493A
Cited
US2122012A
Cited
US1969076A
Cited
US2185473A
Cited
US2296304A
Cited
US2296822A
Cited
US2313390A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-02-27 | 1953-08-29 | 1954-02-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-02-27 | 1957-08-29 | 1958-02-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-02-27 | 1961-08-29 | 1962-02-28 | $7700.00 | Window Closed / Lapsed |