1.
Radio Patent Lists and Index, 1830-1980
by David W. Kraeuter
ISBN: 9780773475205
List Price: $149.95
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Radio and Television Pioneers A Patent Bibliography
by Kraeuter, David W.
ISBN: 9780810825567
List Price: $60.00
3.
British Radio and Television Pioneers A Patent Bibliography
by Kraeuter, David W.
ISBN: 9780810827165
List Price: $48.00