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US2015675A Expired / Lapsed US ⏱️ 0.0 years remaining

Color and shade comparator

Assignee: ADAM A SUTCLIFFE
•
Filing: 1933-02-21
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Granted: 1935-10-01
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Expires: 1953-02-21
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Abstract

No abstract record available.

Inventors

  • 👤 Hays Clifton Earl

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-23 19:30
CPC Classifications
G; G01; G01J; G01J3/00; G01J3/46; G01J3/50; G01J3/51; G01N; G01N21/00; G01N21/17; G01N21/25; G01N21/251; G01J2003/466; G01J3/463

Claims Analysis

Total Claims: 0
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References Cited (Backward Citations)

No citation records indexed.

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1938-09-30 1939-04-01 1939-10-01 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1942-09-30 1943-04-01 1943-10-01 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1946-09-30 1947-04-01 1947-10-01 $7700.00 Window Closed / Lapsed

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