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US2575919A Expired / Lapsed US ⏱️ 0.0 years remaining

Built-up letter tray

Assignee: NU CRAFT PRODUCTS CO
•
Filing: 1947-11-14
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Granted: 1951-11-20
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Expires: 1967-11-14
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Abstract

No abstract record available.

Inventors

  • 👤 Harry L Kautzmann
  • 👤 Joseph A Berardi

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-05 12:05
CPC Classifications
B; B42; B42F; B42F7/00; B42F7/10; B42F7/12; Y; Y10; Y10S; Y10S206/00; Y10S206/821

Claims Analysis

Total Claims: 0
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References Cited (Backward Citations)

US1319431A Cited
US1762596A Cited
US1891420A Cited
US1867738A Cited
US1957153A Cited
US1951972A Cited
US2183992A Cited
US2235709A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1954-11-19 1955-05-21 1955-11-20 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1958-11-19 1959-05-21 1959-11-20 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1962-11-19 1963-05-21 1963-11-20 $7700.00 Window Closed / Lapsed

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