High-frequency zig-zag welding

1,066,907. Finishing edges and. seaming non- metallic sheet material. BRITISH ENKALON Ltd. March 18, 1965 [March 18, 1964], No. 11621/65. Heading B5K. [Also in Division D1] Knitted fabrics which are at least partially derived from a thermoplastic yarn 2, e.g. polyamide, are welded by forming at leas...

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