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Old 02-05-2013, 10:12 AM   #15
Bob Gardner
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Hi Dave,

The Lang angular shape is very distinctive and the Lang method of attaching metal sheathing is also distinctive. As Lang was the director of prop making for the USN I think he would have initially ordered props for the Navy from US and probably Canadian prop makers, made to his design. This didn't last for long. New prop designs emerged during 1918.

Bob
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