US2457761A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Irradiation of liquids using ultraviolet light
Assignee: Individual
•
Filing: 1944-12-08
•
Granted: 1948-12-28
•
Expires: 1964-12-08
Abstract
No abstract record available.
Inventors
- 👤 Wilton W Wesner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 13:04
CPC Classifications
A; A23; A23B; A23B11/00; A23B11/10; A23B11/16; A23B11/164
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2074909A
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US2309124A
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US2340890A
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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) | 1951-12-28 | 1952-06-28 | 1952-12-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-12-28 | 1956-06-28 | 1956-12-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-12-28 | 1960-06-28 | 1960-12-28 | $7700.00 | Window Closed / Lapsed |