US2453095A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Plural stage refrigeration system and control therefor
Assignee: Honeywell Inc
•
Filing: 1943-07-19
•
Granted: 1948-11-02
•
Expires: 1963-07-19
Abstract
No abstract record available.
Inventors
- 👤 William L Mcgrath
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 10:06
CPC Classifications
F; F25; F25B; F25B1/00; F25B1/10; F25B49/00; F25B49/02; F25B49/022
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB190614944A
Cited
US1224661A
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US1753280A
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US2035814A
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US2057101A
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US2165741A
Cited
US2295775A
Cited
US2344215A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-11-02 | 1952-05-03 | 1952-11-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-11-02 | 1956-05-03 | 1956-11-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-11-02 | 1960-05-03 | 1960-11-02 | $7700.00 | Window Closed / Lapsed |