Title:
Photographer's head-screen
United States Patent 1378904


Inventors:
Joe, Schuermann Julius
Application Number:
US40766620A
Publication Date:
05/24/1921
Filing Date:
09/02/1920
Assignee:
Joe, Schuermann Julius
Primary Class:
Other Classes:
160/377, 160/378, 248/161, 396/4
International Classes:
G03B15/06
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