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US2251109A Expired / Lapsed US ⏱️ 0.0 years remaining

Method of producing highly lustrous hollow bodies from acetyl cellulose and like plastic substances

Assignee: NEOCELL PRODUCTS Corp
•
Filing: 1939-01-19
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Granted: 1941-07-29
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Expires: 1959-01-19
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Abstract

No abstract record available.

Inventors

  • 👤 Bratring Kurt

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-28 19:48
CPC Classifications
B; B29; B29C; B29C37/00; B29C37/0003; B29C37/0017; B29C41/00; B29C41/02; B29C41/14; B29C33/00; B29C33/56; B29C33/60; B29C35/00; B29C35/02; B29C35/04; B29C35/049; B29K; B29K2001/00; B29K2001/08; B29K2001/12

Claims Analysis

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References Cited (Backward Citations)

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USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1944-07-28 1945-01-27 1945-07-29 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1948-07-28 1949-01-27 1949-07-29 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1952-07-28 1953-01-27 1953-07-29 $7700.00 Window Closed / Lapsed

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