Patent US2730867A successfully refreshed from Google Patents.
US2730867A
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US
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Refrigeration unit
Assignee: MUNDEAN Manufacturing Co
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Filing: 1954-03-19
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Granted: 1956-01-17
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Expires: 1974-03-19
Abstract
No abstract record available.
Inventors
- 👤 Ellsworth C Salisbury
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 10:00
CPC Classifications
F; F25; F25D; F25D19/00; F25D19/02; F25D2317/00; F25D2317/06; F25D2317/065; F25D2317/0651; F25D2317/066; F25D2317/0661
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1818129A
Cited
US2245234A
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US2282970A
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US2353240A
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US2549547A
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US2546417A
Cited
US2624181A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-01-16 | 1959-07-18 | 1960-01-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-01-16 | 1963-07-18 | 1964-01-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-01-16 | 1967-07-18 | 1968-01-17 | $7700.00 | Window Closed / Lapsed |