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Patent US2677245A successfully refreshed from Google Patents.
US2677245A
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US
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Apparatus for utilizing solid refrigerants
Assignee: Individual
•
Filing: 1950-09-18
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Granted: 1954-05-04
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Expires: 1970-09-18
Abstract
No abstract record available.
Inventors
- 👤 Benjamin F Edmondson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 03:55
CPC Classifications
F; F25; F25D; F25D3/00; F25D3/12; F25D3/122; F25D3/14
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1887687A
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US1901000A
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US2065987A
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US2067325A
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US2190796A
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US2305740A
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US2318222A
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US2508385A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-05-03 | 1957-11-02 | 1958-05-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-05-03 | 1961-11-02 | 1962-05-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-05-03 | 1965-11-02 | 1966-05-04 | $7700.00 | Window Closed / Lapsed |