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US2586625A Expired / Lapsed US ⏱️ 0.0 years remaining

Apparatus for treating materials by ultraviolet radiation

Assignee: Individual
•
Filing: 1948-06-08
•
Granted: 1952-02-19
•
Expires: 1968-06-08
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Abstract

No abstract record available.

Inventors

  • 👤 Virgil M Downey

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-26 21:03
CPC Classifications
A; A23; A23B; A23B2/00; A23B2/50; A23B2/53

Claims Analysis

Total Claims: 0
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References Cited (Backward Citations)

US1981954A Cited
US2215635A Cited
US2327346A Cited
US2313983A Cited
US2318536A Cited
US2337746A Cited
US2369123A Cited
US2489686A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1955-02-18 1955-08-20 1956-02-19 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1959-02-18 1959-08-20 1960-02-19 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1963-02-18 1963-08-20 1964-02-19 $7700.00 Window Closed / Lapsed

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