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Application filed by Daniel Tefi ApparatebaufiledCriticalDaniel Tefi Apparatebau
Publication of CH219702ApublicationCriticalpatent/CH219702A/de
B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
B29D17/00—Producing carriers of records containing fine grooves or impressions, e.g. disc records for needle playback, cylinder records; Producing record discs from master stencils
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Engineering & Computer Science
(AREA)
Mechanical Engineering
(AREA)
CH219702D1939-10-201940-10-14Verfahren zum Herstellen von Schallbandmatrizen.
CH219702A
(de)