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1363884 Making exhaust systems SPIRALO HOLDING AG 21 June 1971 [25 June 1970] 03057/74 Divided out of 1363883 Heading B3A The disclosure is the same as that of parent Specification 1,363,883, but the claims relate to making a part of an exhaust system by screwing together two tubular members using a...

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Bibliographische Detailangaben
Hauptverfasser:	MALKKI,EINO KALERVO, SILDE,VALENTIN
Format:	Patent
Sprache:	fin ; swe
Schlagworte:	AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKINGWITHOUT ESSENTIALLY REMOVING MATERIAL BLASTING ENGINE PLANTS IN GENERAL GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNALCOMBUSTION ENGINES GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES ORENGINES IN GENERAL HEATING LIGHTING MACHINES OR ENGINES IN GENERAL MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES,OTHERWISE THAN BY ROLLING MECHANICAL ENGINEERING MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVINGMATERIAL PERFORMING OPERATIONS PUNCHING METAL STEAM ENGINES TRANSPORTING WEAPONS
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Beschreibung
Zusammenfassung:	1363884 Making exhaust systems SPIRALO HOLDING AG 21 June 1971 [25 June 1970] 03057/74 Divided out of 1363883 Heading B3A The disclosure is the same as that of parent Specification 1,363,883, but the claims relate to making a part of an exhaust system by screwing together two tubular members using as threads one or more longitudinal corrugations formed in the metal strip which is helically wound and closed by a helical, gas-tight seam to form the tubular members.