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US2839939A Expired / Lapsed US ⏱️ 0.0 years remaining

Change-speed gear

Assignee: Individual
•
Filing: 1955-06-07
•
Granted: 1958-06-24
•
Expires: 1975-06-07
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Abstract

No abstract record available.

Inventors

  • 👤 Juy Lucien Charles Hippolyte

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-02 22:31
CPC Classifications
B; B62; B62M; B62M9/00; B62M9/04; B62M9/06; B62M9/10; B62M9/12; B62M9/121; B62M9/125; B62M9/124; B62M9/127; B62M2009/12413

Claims Analysis

Total Claims: 0
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References Cited (Backward Citations)

US2010248A Cited
GB444999A Cited
US2187368A Cited
GB664186A Cited
DE904385C Cited
GB684211A Cited
FR1048895A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1961-06-23 1961-12-23 1962-06-24 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1965-06-23 1965-12-23 1966-06-24 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1969-06-23 1969-12-23 1970-06-24 $7700.00 Window Closed / Lapsed

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