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US1789271A Expired / Lapsed US ⏱️ 0.0 years remaining

Change-speed gear

Assignee: C E M S A Costruzioni Elettromeccaniche Di Saronno Soc
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Filing: 1929-12-13
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Granted: 1931-01-13
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Expires: 1949-12-13
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Abstract

No abstract record available.

Inventors

  • 👤 Cappa Giulio Cesare

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-24 19:30
CPC Classifications
F; F16; F16H; F16H3/00; F16H3/02; F16H3/08; F16H3/087; F16H3/093; Y; Y10; Y10T; Y10T74/00; Y10T74/19; Y10T74/19219; Y10T74/19377; Y10T74/19386; Y10T74/194; Y10T74/19414; Y10T74/19419; Y10T74/19423; Y10T74/19428; Y10T74/19433

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) 1934-01-12 1934-07-14 1935-01-13 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1938-01-12 1938-07-14 1939-01-13 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1942-01-12 1942-07-14 1943-01-13 $7700.00 Window Closed / Lapsed

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