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US1606282A Expired / Lapsed US ⏱️ 0.0 years remaining

Process of making pipe flanges

Assignee: Individual
•
Filing: 1924-10-29
•
Granted: 1926-11-09
•
Expires: 1944-10-29
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Abstract

No abstract record available.

Inventors

  • 👤 Claude A Witter

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-25 02:27
CPC Classifications
B; B21; B21K; B21K23/00; B21K23/04; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49428; Y10T29/49789; Y10T29/49794

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) 1929-11-08 1930-05-10 1930-11-09 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1933-11-08 1934-05-10 1934-11-09 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1937-11-08 1938-05-10 1938-11-09 $7700.00 Window Closed / Lapsed

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