Patent US2774460A successfully refreshed from Google Patents.
US2774460A
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Quick-freeze conveyors
Assignee: Lewis Refrigeration & Supply C
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Filing: 1953-03-16
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Granted: 1956-12-18
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Expires: 1973-03-16
Abstract
No abstract record available.
Inventors
- 👤 Jean E Spoonhour
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 04:51
CPC Classifications
F; F25; F25D; F25D25/00; F25D25/04; B; B65; B65G; B65G17/00; B65G17/12; B65G17/22; B65G17/30; B65G17/32; B65G17/34; B65G2201/00; B65G2201/02; F25D2400/00; F25D2400/30
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US807687A
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US1150302A
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US1455434A
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US1562560A
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US2002720A
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DE701593C
Cited
US2263811A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-12-18 | 1960-06-18 | 1960-12-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-12-18 | 1964-06-18 | 1964-12-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-12-18 | 1968-06-18 | 1968-12-18 | $7700.00 | Window Closed / Lapsed |