Title:
Pilot-channel-indicating system
Document Type and Number:
United States Patent 1642710

Inventors:
Affel, Herman A.
Publication Date:
09/20/1927
View Patent Images:
Images are available in PDF form when logged in. To view PDFs, Login  or  Create Account (Free!)
Referenced by:
View patents that cite this patent
Export Citation:
Click for automatic bibliography generation
Assignee:
AMERICAN TELEPHONE & TELEGRAPH
Primary Class:
455/9
International Classes:
H04B3/10; H04B3/04




<- Previous Patent (Tunnel construction)   |   Next Patent (Game) ->