Patent US2768507A successfully refreshed from Google Patents.
US2768507A
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US
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Freezing apparatus for making ice blocks
Assignee: Grasso S Machf En N V S Hertog
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Filing: 1953-09-30
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Granted: 1956-10-30
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Expires: 1973-09-30
Abstract
No abstract record available.
Inventors
- 👤 Hoen Cornelis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 04:45
CPC Classifications
F; F25; F25C; F25C1/00; F25C1/04; F25C1/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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Cited
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Cited
US2648955A
Cited
US2723534A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-10-30 | 1960-04-30 | 1960-10-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-10-30 | 1964-04-30 | 1964-10-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-10-30 | 1968-04-30 | 1968-10-30 | $7700.00 | Window Closed / Lapsed |