Title:
Means for treatment of pyorrhea
United States Patent 1389662


Inventors:
Robert, Irwin John
Application Number:
US37173020A
Publication Date:
09/06/1921
Filing Date:
04/06/1920
Assignee:
Robert, Irwin John
Primary Class:
Other Classes:
607/134, 607/153
International Classes:
A61C19/06
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