Patent US2538734A successfully refreshed from Google Patents.
US2538734A
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Automatic freezing apparatus
Assignee: York Corp
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Filing: 1946-03-25
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Granted: 1951-01-16
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Expires: 1966-03-25
Abstract
No abstract record available.
Inventors
- 👤 Velt C Patterson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 06:04
CPC Classifications
A; A23; A23B; A23B2/00; A23B2/80; A23B2/803; A23B2/8033; F; F25; F25D; F25D13/00; F25D13/06; F25D13/067
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US325360A
Cited
US999164A
Cited
US1053033A
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US1422816A
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US1561664A
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US1805029A
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US1977008A
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US1846258A
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US1958890A
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US2257377A
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US2415677A
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US2344664A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-01-15 | 1954-07-17 | 1955-01-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-01-15 | 1958-07-17 | 1959-01-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-01-15 | 1962-07-17 | 1963-01-16 | $7700.00 | Window Closed / Lapsed |