Patent US2442978A successfully refreshed from Google Patents.
US2442978A
Expired / Lapsed
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Refrigeration apparatus having frost localizing means
Assignee: Lanteris Space LLC
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Filing: 1944-03-17
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Granted: 1948-06-08
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Expires: 1964-03-17
Abstract
No abstract record available.
Inventors
- 👤 Jones Welton Paul
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 20:45
CPC Classifications
F; F25; F25D; F25D21/00; F25D21/06; F25D21/065
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1963565A
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US2003414A
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US2010259A
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US2052822A
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US2133958A
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US2319522A
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US2361792A
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US2370267A
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US2343166A
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US2310872A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-06-08 | 1951-12-08 | 1952-06-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-06-08 | 1955-12-08 | 1956-06-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-06-08 | 1959-12-08 | 1960-06-08 | $7700.00 | Window Closed / Lapsed |