Sound reproducer

Saved in:
Bibliographic Details
Main Author MCCUTCHEN BRUNSON S
Format Patent
LanguageEnglish
Published 05.05.1925
Subjects
DEAF-AID SETS
ELECTRIC COMMUNICATION TECHNIQUE
ELECTRICITY
LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKEACOUSTIC ELECTROMECHANICAL TRANSDUCERS
PUBLIC ADDRESS SYSTEMS
Online AccessGet full text

Cover

More Information
Bibliography:Application Number: US19240703509