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Publication of FR469338ApublicationCriticalpatent/FR469338A/fr
B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
B21F—WORKING OR PROCESSING OF METAL WIRE
B21F45/00—Wire-working in the manufacture of other particular articles
B21F45/16—Wire-working in the manufacture of other particular articles of devices for fastening or securing purposes
B21F45/26—Wire-working in the manufacture of other particular articles of devices for fastening or securing purposes of buttons
B21F45/28—Wire-working in the manufacture of other particular articles of devices for fastening or securing purposes of buttons of "patent-fastener" or press-button type
B—PERFORMING OPERATIONS; TRANSPORTING
B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
B21F—WORKING OR PROCESSING OF METAL WIRE
B21F35/00—Making springs from wire
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Engineering & Computer Science
(AREA)
Mechanical Engineering
(AREA)
FR469338D1913-03-031914-03-02Machine pour la fabrication et le montage des ressorts dans les pièces de boutons à pression
ExpiredFR469338A
(fr)