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Device, more particularly manifold writing device for issuing tickets or the like

US 2,060,922 A · Inventors: DRUMMOND BLACK HORACE et al.

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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 November 17, 1936. A patent granted before 1976 lasted at most 17 years from grant, so its term ended by November 17, 1953.
  • We check US rights only. Old patents can still inspire new ones: improvements may be patentable.
FiledSeptember 10, 1934
GrantedNovember 17, 1936
Term endedNovember 17, 1953
Application number—
Classification (CPC)G07B3/04 +1 more
Length11 pages

Timeline

Timeline From USPTO dates

1935193719391941194319451947194919511953Application filedSep 10, 1934Patent grantedNov 17, 1936Term endedNov 17, 1953

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