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Title:
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United States Patent 1991284


Inventors:
Saul, Lewbel
Application Number:
US71262434A
Publication Date:
02/12/1935
Filing Date:
02/23/1934
Export Citation:
Click for automatic bibliography generation
Assignee:
Saul, Lewbel
Primary Class:
368/277
Other Classes:
368/281, 968/31, 968/300
International Classes:
G04B3/04; G04B37/00
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