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KEYWORDS: Inventions

Results: 1 - 20 of 58 total   Next

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Date Format Image Collection
1955 Book    Document
1970 Article    Document
1959 Article    Document
October 1932 Article    Document
January 1933     Document
October 1932 Article    Document
December 1932     Document
1959 Article    Document
1959 Article    Document
October 1933 Article    Document
January 1934 Article    Document
January 1934 Article    Document
December 1933 Article    Document
June 1933 Article    Document
September 24, 1844 Patent    Document
March 23, 1869 Patent    Document
February 16, 1869 Patent    Document
October 22, 1861 Government Document    Document
August 25, 1863 Patent    Document
December 18, 1866 Patent    Document
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