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Apparatus for producing bent pipes of correct prescribed lengths

US 1,781,567 A · Inventors: HIERONYMUS BOHLING RUDOLF

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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 November 11, 1930. A patent granted before 1976 lasted at most 17 years from grant, so its term ended by November 11, 1947.
  • We check US rights only. Old patents can still inspire new ones: improvements may be patentable.
FiledApril 6, 1929
GrantedNovember 11, 1930
Term endedNovember 11, 1947
Application number—
Classification (CPC)B21C37/28 +2 more
Length3 pages

Timeline

Timeline From USPTO dates

193019321934193619381940194219441946Application filedApril 6, 1929Patent grantedNov 11, 1930Term endedNov 11, 1947

Sources & verification

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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