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US1782756A Expired / Lapsed US ⏱️ 0.0 years remaining

Change-speed gear

Assignee: CROCKER WHEELER ELECTRIC Manufacturing C
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Filing: 1929-04-27
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Granted: 1930-11-25
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Expires: 1949-04-27
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Abstract

No abstract record available.

Inventors

  • 👤 Edmunds Howard Maurice
  • 👤 Waring Edward Hileman

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-25 20:23
CPC Classifications
F; F16; F16H; F16H13/00; F16H13/10; F16H13/14

Claims Analysis

Total Claims: 0
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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) 1933-11-24 1934-05-26 1934-11-25 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1937-11-24 1938-05-26 1938-11-25 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1941-11-24 1942-05-26 1942-11-25 $7700.00 Window Closed / Lapsed

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