Copper, titanium alloys

1929

“A substitution of titanium or aluminum for beryllium in nickel-bearing steels was also found to impart considerable age-hardenability.”

Kroll had granted Siemens & Halske exclusive rights to utilise his copper-titanium patents for a royalty rate of 5 percent. [39]


1930

1931

1932

1933-1936


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[39] Henry A.Carey, Jr., Edwin D.Hicks, J.Pierre Kolisch and Joseph Schulein vs The United States, Report of decisions of the Supreme Court in Court of Claims cases, 1964, page 331