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US1445335A Expired / Lapsed US ⏱️ 0.0 years remaining

Valve grinder

Assignee: Individual
•
Filing: 1920-09-24
•
Granted: 1923-02-13
•
Expires: 1940-09-24
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Abstract

No abstract record available.

Inventors

  • 👤 Alexander J Mcintosh

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-31 00:15
CPC Classifications
B; B24; B24B; B24B15/00; B24B15/08; Y; Y10; Y10T; Y10T74/00; Y10T74/18; Y10T74/18568; Y10T74/18576; Y10T74/18584; Y10T74/19; Y10T74/19642; Y10T74/19698; Y10T74/19702; Y10T74/19721; Y10T74/19805

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) 1926-02-12 1926-08-14 1927-02-13 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1930-02-12 1930-08-14 1931-02-13 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1934-02-12 1934-08-14 1935-02-13 $7700.00 Window Closed / Lapsed

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