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Summary
Identifier: belltelephonevol3132mag00amerrich (find matches)
Title: Bell telephone magazine
Year: 1922 (1920s)
Authors: American Telephone and Telegraph Company American Telephone and Telegraph Company. Information Dept
Subjects: Telephone
Publisher: (New York, American Telephone and Telegraph Co., etc.)
Contributing Library: Prelinger Library
Digitizing Sponsor: Internet Archive
Text Appearing Before Image:
82 Bell Telephone Magazine SUMMER
Text Appearing After Image:
Above: When the feasibility of a new device has beendemonstrated, its development is taken over by an Appa-ratus Development department. J. R. Wilson (right)and J. A. Morton head the Electronics Apparatus De-velopment Department which has brought the transistorto its present state. Below: The tetrode transistor is nowa joint undertaking between research, R. L. Wallace, Jr.(left), and development, W. J. Pietenpol