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US2403035A Expired / Lapsed US ⏱️ 0.0 years remaining

Perforating device for index cards

Assignee: Individual
•
Filing: 1945-01-20
•
Granted: 1946-07-02
•
Expires: 1965-01-20
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Abstract

No abstract record available.

Inventors

  • 👤 John W Whitson

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-29 19:06
CPC Classifications
B; B26; B26F; B26F1/00; B26F1/32; B26F1/36; Y; Y10; Y10T; Y10T83/00; Y10T83/202; Y10T83/2092; Y10T83/2096; Y10T83/2135; Y10T83/2144; Y10T83/215; Y10T83/2155; Y10T83/2157; Y10T83/2163; Y10T83/748; Y10T83/7593; Y10T83/869; Y10T83/8752; Y10T83/8798; Y10T83/929; Y10T83/9493

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) 1949-07-01 1949-12-31 1950-07-02 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1953-07-01 1953-12-31 1954-07-02 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1957-07-01 1957-12-31 1958-07-02 $7700.00 Window Closed / Lapsed

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