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.)
Deutsche Waffen und Munitionsfabriken AG
Original Assignee
Deutsche Waffen und Munitionsfabriken AG
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 Deutsche Waffen und Munitionsfabriken AGfiledCriticalDeutsche Waffen und Munitionsfabriken AG
Application grantedgrantedCritical
Publication of FR868941ApublicationCriticalpatent/FR868941A/fr
B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
B21D51/00—Making hollow objects
B21D51/16—Making hollow objects characterised by the use of the objects
B21D51/24—Making hollow objects characterised by the use of the objects high-pressure containers, e.g. boilers, bottles
Landscapes
Engineering & Computer Science
(AREA)
Mechanical Engineering
(AREA)
FR868941D1939-08-141940-12-31Procédé et dispositif pour rétrécir et renforcer localement la paroi des extrémités ouvertes de corps creux
ExpiredFR868941A
(fr)