Process of manufacturing gelatin capsules for use as bottle caps
United States Patent 1657982

Inventors:
Warren, Wilkie
Webb, Alexander D.
Publication Date:
01/31/1928
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Assignee:
PARKE DAVIS & CO
Primary Class:
264/340
Other Classes:
264/342R, 264/303, 264/263, 264/307
International Classes:
B29D31/00