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Books by James Herschel and Ralph Wayne Getz. Hansen

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ORIGINAL PATENT APPLICATION NUMBER 1,350,644 FOR GLASS FEEDERS FABRICATED FROM HIGH TEMPERATURE-HIGH STRENGTH ALLOY. (DELAWARE, U.S.A.).
ORIGINAL PATENT APPLICATION NUMBER 1,350,644 FOR GLASS FEED…
By: James Herschel and Ralph Wayne Getz. Hansen
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