Vereinigte Deutsche Metallwerke, or United German Metalworks, was a society of medium-sized firms formed in 1930. One of VDM’s member companies, the Heddernheimer Metal Company, initiated the ...
An early predominant manufacturer in the United States, Spencer Heath's American Propeller and Manufacturing Company was first to use machines for mass production of aircraft propellers, and, under ...
現在アクセス不可の可能性がある結果が表示されています。
アクセス不可の結果を非表示にする