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Switch mechanism for expandable track device with a switch actuator also serving as a stop means

US 3,489,869 A · Inventors: GREENWOOD WILLIAM W

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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.

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Why it's free to use

  • Granted January 13, 1970. A patent granted before 1976 lasted at most 17 years from grant, so its term ended by January 13, 1987.
  • We check US rights only. Old patents can still inspire new ones: improvements may be patentable.
FiledMay 16, 1968
GrantedJanuary 13, 1970
Term endedJanuary 13, 1987
Application number—
Classification (CPC)G06K13/067
Length3 pages

Timeline

Timeline From USPTO dates

1969197119731975197719791981198319851987Application filedMay 16, 1968Patent grantedJan 13, 1970Term endedJan 13, 1987

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Official USPTO records

Full published documentText and every drawing sheet as a PDF.USPTOFile historyStatus, office actions, notices, fee records and petitions.USPTO Patent CenterPatent Public Search recordSearchable full text and bibliographic data.USPTO

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