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Author
by Huntington Wilson
by United States. Dept. of Agriculture
by Charles Freeman Libby
by United States. Patent Office
by Walter J. Derenberg
by W. L. Voelker
by Willis A. Boughton
by John McCarthy
by James W. McDonough
by Martin Wagner
by United States. Congress. House. Select Committee on Patents and Patent Laws
by William Edgar Simonds
by Burke, Edmund
by Willard Parker Butler
by J. St. John
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