Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
CHARLES JOHAN VAN SOOLEN
HENRI COWAN
Original Assignee
CHARLES JOHAN VAN SOOLEN
HENRI COWAN
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by CHARLES JOHAN VAN SOOLEN, HENRI COWANfiledCriticalCHARLES JOHAN VAN SOOLEN
Application grantedgrantedCritical
Publication of FR470360ApublicationCriticalpatent/FR470360A/fr
G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
G11B3/00—Recording by mechanical cutting, deforming or pressing, e.g. of grooves or pits; Reproducing by mechanical sensing; Record carriers therefor
G11B3/44—Styli, e.g. sapphire, diamond
G11B3/50—Anvils or other supports opposing stylus forces
FR470360D1914-03-261914-03-26Appareil résonateur reproducteur de vibrations inscrites du son, sur disques, bandes, cylindres ou autres
ExpiredFR470360A
(fr)