US2425816A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for cooling under ultraviolet radiation and vacuum conditions
Assignee: W L MAXSON CORP
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Filing: 1944-07-13
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Granted: 1947-08-19
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Expires: 1964-07-13
Abstract
No abstract record available.
Inventors
- 👤 William L Maxson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 20:19
CPC Classifications
A; A23; A23B; A23B2/00; A23B2/50; A23B2/53; F; F25; F25D; F25D2317/00; F25D2317/04; F25D2317/041; F25D2317/0417; F25D2317/043
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
DE521040C
Cited
US2107763A
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US2145196A
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US2109002A
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US2263456A
Cited
US2246676A
Cited
US2234254A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-08-18 | 1951-02-17 | 1951-08-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-08-18 | 1955-02-17 | 1955-08-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-08-18 | 1959-02-17 | 1959-08-19 | $7700.00 | Window Closed / Lapsed |