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Expired, full termArchiveSolo inventor

Continuous ribbon printing machine

US 1,986,643 A · Inventors: MUELLER EMIL L

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Listed from its USPTO record in Patent Yard's full-term archive. Its claims, description and drawings are in the USPTO PDF and on Google Patents, and the Claude kit works from them.

Why it's free to use

  • Granted January 1, 1935. A patent granted before 1976 lasted at most 17 years from grant, so its term ended by January 1, 1952.
  • We check US rights only. Old patents can still inspire new ones: improvements may be patentable.
FiledNovember 15, 1932
GrantedJanuary 1, 1935
Term endedJanuary 1, 1952
Application number—
Classification (CPC)B41F17/00
Length12 pages

Timeline

Timeline From USPTO dates

1933193519371939194119431945194719491951Application filedNov 15, 1932Patent grantedJan 1, 1935Term endedJan 1, 1952

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