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Apparatus for treating material in the gaseous phase

US 1,369,787 A · Inventors: SCHUYLER DAVIS CORNELIUS

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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 March 1, 1921. A patent granted before 1976 lasted at most 17 years from grant, so its term ended by March 1, 1938.
  • We check US rights only. Old patents can still inspire new ones: improvements may be patentable.
FiledApril 30, 1917
GrantedMarch 1, 1921
Term endedMarch 1, 1938
Application number—
Classification (CPC)B01J19/12 +1 more
Length16 pages

Timeline

Timeline From USPTO dates

1918192119241927193019331936Application filedApril 30, 1917Patent grantedMarch 1, 1921Term endedMarch 1, 1938

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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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