US2780074A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Refrigerating unit
Assignee: Individual
•
Filing: 1954-01-25
•
Granted: 1957-02-05
•
Expires: 1974-01-25
Abstract
No abstract record available.
Inventors
- 👤 Everett H Haanan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 10:58
CPC Classifications
F; F25; F25D; F25D3/00; F25D3/12; F25D3/14
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1764194A
Cited
US1870684A
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US2055158A
Cited
US1893483A
Cited
GB398174A
Cited
US1938925A
Cited
US1980089A
Cited
US2263522A
Cited
US2172916A
Cited
US2367097A
Cited
US2677245A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-02-05 | 1960-08-06 | 1961-02-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-02-05 | 1964-08-06 | 1965-02-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-02-05 | 1968-08-06 | 1969-02-05 | $7700.00 | Window Closed / Lapsed |