Patent US2809500A successfully refreshed from Google Patents.
US2809500A
Expired / Lapsed
US
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Ice block releasing device
Assignee: Motors Liquidation Co
•
Filing: 1956-03-22
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Granted: 1957-10-15
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Expires: 1976-03-22
Abstract
No abstract record available.
Inventors
- 👤 Arthur J Frei
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 23:52
CPC Classifications
F; F25; F25C; F25C1/00; F25C1/22
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2064655A
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US1924988A
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US1980571A
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US2021047A
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US2113014A
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US2261952A
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US2217681A
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US2429882A
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US2433210A
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US2433211A
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US2510400A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-10-14 | 1961-04-15 | 1961-10-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-10-14 | 1965-04-15 | 1965-10-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-10-14 | 1969-04-15 | 1969-10-15 | $7700.00 | Window Closed / Lapsed |