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Polarized conductive couple suitable for use as a rectifier, etc.

US 1,918,526 A · Inventors: EDELMAN PHILIP E

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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 July 18, 1933. A patent granted before 1976 lasted at most 17 years from grant, so its term ended by July 18, 1950.
  • We check US rights only. Old patents can still inspire new ones: improvements may be patentable.
FiledMay 14, 1928
GrantedJuly 18, 1933
Term endedJuly 18, 1950
Application number—
Classification (CPC)H01G9/022
Length3 pages

Timeline

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19291932193519381941194419471950Application filedMay 14, 1928Patent grantedJuly 18, 1933Term endedJuly 18, 1950

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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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