Apparatus for testing hygroscopic substances
United States Patent 1642577

Inventors:
Carson, Frederick T.
Publication Date:
09/13/1927
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Assignee:
Carson, Frederick T.
Primary Class:
312/1
Other Classes:
34/89, 454/238, 141/51, 454/56, 73/73, 55/DIG.018, 422/50, 34/80
International Classes:
B25J21/02; B25J21/00