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Heat-treatment of nickel-chromium alloys

US 2,497,667 A · Inventors: ERNEST GRESHAM HAROLD et al.

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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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  • Granted February 14, 1950. A patent granted before 1976 lasted at most 17 years from grant, so its term ended by February 14, 1967.
  • We check US rights only. Old patents can still inspire new ones: improvements may be patentable.
FiledFebruary 4, 1947
GrantedFebruary 14, 1950
Term endedFebruary 14, 1967
Application number—
Classification (CPC)C22C19/058
Length1 pages

Timeline

Timeline From USPTO dates

1948195019521954195619581960196219641966Application filedFeb 4, 1947Patent grantedFeb 14, 1950Term endedFeb 14, 1967

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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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