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.)
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National Machinery Co
Original Assignee
National Machinery Co
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 National Machinery CofiledCriticalNational Machinery Co
Application grantedgrantedCritical
Publication of FR1022860ApublicationCriticalpatent/FR1022860A/fr
B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
B21K—MAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES, RIVETS, BOLTS OR WHEELS
B21K1/00—Making machine elements
B21K1/44—Making machine elements bolts, studs, or the like
B21K1/46—Making machine elements bolts, studs, or the like with heads
B21K1/463—Making machine elements bolts, studs, or the like with heads with recessed heads
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Engineering & Computer Science
(AREA)
Mechanical Engineering
(AREA)
FR1022860D1949-05-201950-05-08Perfectionnements apportés aux procédés et machines pour poinçonner ou creuser des pièces métalliques
ExpiredFR1022860A
(fr)