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.)
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
Verfahren zum Herstellen von Praegeformen fuer die Praegung nahtloser, der Zahnform entsprechender Metallzahnkronen und Brueckenpfeiler mittels bildsamer Praegemasse
Vorrichtung zur herstellung von koerpern mit komplizierten innen- und/oder aussenkonturen, insbesondere zuendkerzengehaeusen, nach dem pulvermetallurgischen verfahren