Patent US2622409A successfully refreshed from Google Patents.
US2622409A
Expired / Lapsed
US
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Ultraviolet light source and circuit for refrigerator cabinets
Assignee: INST DIVI THOMAE FOUNDATION
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Filing: 1946-07-26
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Granted: 1952-12-23
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Expires: 1966-07-26
Abstract
No abstract record available.
Inventors
- 👤 Stirnkorb John Robert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 05:00
CPC Classifications
H; H01; H01J; H01J61/00; H01J61/70
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2181305A
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US2322421A
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US2245837A
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US2331881A
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US2339051A
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US2341990A
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US2339085A
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US2448937A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-12-23 | 1956-06-23 | 1956-12-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-12-23 | 1960-06-23 | 1960-12-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-12-23 | 1964-06-23 | 1964-12-23 | $7700.00 | Window Closed / Lapsed |