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EUSTACHY BIALOBORSKI
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EUSTACHY BIALOBORSKI
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Application filed by EUSTACHY BIALOBORSKIfiledCriticalEUSTACHY BIALOBORSKI
Application grantedgrantedCritical
Publication of FR451005ApublicationCriticalpatent/FR451005A/en
G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
FR451005D1912-04-031912-11-25
Apparatus for recording and reproducing acoustic waves
ExpiredFR451005A
(en)
Apparatus intended to determine the direction of sound waves and more generally of all waves capable of being transformed into sound waves of proportional intensity
Apparatus intended to determine the direction of sound waves and more generally of all waves capable of being transformed into sound waves of proportional intensity