It would seem from these patents that at this time no discovery had been made in Germany as to the high resistance to corrosion of steels containing a relatively high percentage of chromium in combination with carbon. (Mary Katharine Hickey. "History and development of stainless steel and stainless iron")〔1934年〕[1]
↑Mary Katharine Hickey (1934). History and development of stainless steel and stainless iron (M.B.A. thesis). Boston University. p. 24. https://hdl.handle.net/2144/21460
