Patent US2990694A successfully refreshed from Google Patents.
US2990694A
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Refrigeration apparatus
Assignee: Individual
•
Filing: 1958-07-10
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Granted: 1961-07-04
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Expires: 1978-07-10
Abstract
No abstract record available.
Inventors
- 👤 Carl K Kummerlowe
- 👤 Joseph E Batie
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 07:22
CPC Classifications
F; F25; F25B; F25B15/00; F25B15/02; F25B27/00; F25B27/02; Y; Y02; Y02A; Y02A30/00; Y02A30/27; Y02A30/274; Y02B; Y02B30/00; Y02B30/62; Y02B30/625
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1933360A
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US1983056A
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US2115128A
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US2196920A
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US2192367A
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US2399916A
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US2592712A
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US2625803A
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US2783622A
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US2840997A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-07-03 | 1965-01-02 | 1965-07-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-07-03 | 1969-01-02 | 1969-07-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-07-03 | 1973-01-02 | 1973-07-04 | $7700.00 | Window Closed / Lapsed |