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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HENRICH AUGUSTE SCHMIDT
Original Assignee
HENRICH AUGUSTE SCHMIDT
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Filing date
Publication date
Application filed by HENRICH AUGUSTE SCHMIDTfiledCriticalHENRICH AUGUSTE SCHMIDT
Application grantedgrantedCritical
Publication of FR455111ApublicationCriticalpatent/FR455111A/fr
B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
B21C37/00—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
B21C37/06—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape of tubes or metal hoses; Combined procedures for making tubes, e.g. for making multi-wall tubes
B21C37/15—Making tubes of special shape; Making tube fittings
B21C37/22—Making finned or ribbed tubes by fixing strip or like material to tubes
B21C37/26—Making finned or ribbed tubes by fixing strip or like material to tubes helically-ribbed tubes
FR455111D1912-02-081913-01-29Perfectionnements à la construction des vis d'archimède
ExpiredFR455111A
(fr)