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Patent US2674697A successfully refreshed from Google Patents.
US2674697A
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US
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Apparatus for treating liquids with light rays
Assignee: Individual
•
Filing: 1950-06-23
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Granted: 1954-04-06
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Expires: 1970-06-23
Abstract
No abstract record available.
Inventors
- 👤 Nicholson Emmett
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 09:38
CPC Classifications
A; A23; A23B; A23B2/00; A23B2/50; A23B2/53
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1068898A
Cited
US1145140A
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FR669400A
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GB328410A
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US2072417A
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US2119784A
Cited
US2280841A
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US2338388A
Cited
US2446712A
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US2406146A
Cited
US2507490A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-04-05 | 1957-10-05 | 1958-04-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-04-05 | 1961-10-05 | 1962-04-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-04-05 | 1965-10-05 | 1966-04-06 | $7700.00 | Window Closed / Lapsed |