Telegraph selection system
United States Patent 2148430

Inventors:
Benjamin, Abraham S.
Publication Date:
02/28/1939
View Patent Images:
Download PDF 2148430 pdf       PDF help
Export Citation:
Click for automatic bibliography generation
Assignee:
TELETYPE CORP
Primary Class:
178/2C
Other Classes:
178/4.10R
International Classes:
H04L12/40