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Electrolytic treating apparatus including a pulsating d. c. power source

US 3,294,666 A · Inventors: WIERSMA CLIFFORD H

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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 December 27, 1966. A patent granted before 1976 lasted at most 17 years from grant, so its term ended by December 27, 1983.
  • We check US rights only. Old patents can still inspire new ones: improvements may be patentable.
FiledJuly 2, 1963
GrantedDecember 27, 1966
Term endedDecember 27, 1983
Application number—
Classification (CPC)C25F7/00
Length4 pages

Timeline

Timeline From USPTO dates

1964196619681970197219741976197819801982Application filedJuly 2, 1963Patent grantedDec 27, 1966Term endedDec 27, 1983

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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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