Front:
Official
First Day of Issue
EDWIN ARMSTRONG
FREQUENCY MODULATION
PHILO T. FARNSWORTH
FIRST TELEVISION CAMERA
ArtCraft
CHARLES STEINMETZ
ELECTRICAL THEORIES
NIKOLA TESLA
INDUCTION MOTOR
A Tribute To
American Inventors
1983
WASHING
TON,
SEP
21
1983 9
20066
DC
20c
ELECTRICAL THEORIES
Charles Steinmetz
FIRST DAY OF ISSUE
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