TREA

in which work is subjected to permanent internal twisting

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Industry

  • CPC
  • B21B15/02
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Parent Industries

BPERFORMING OPERATIONS TRANSPORTING B21Mechanical metalworking B21BROLLING OF METAL B21B15/00Arrangements for performing additional metal-working operations specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills

Current Industry

B21B15/02in which work is subjected to permanent internal twisting
Industries

Patents Grantslast 30 patents

  • Information Patent Grant

    Apparatus for manufacturing core wire for optical fibers
    • Patent number 4,776,195
    • Issue date Oct 11, 1988
    • Netsuren Co., Ltd.
    • Tetsukazu Fukuhara
    • B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
  • Information Patent Grant

    2160268
    • Patent number 2,160,268
    • Issue date May 30, 1939
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    1861525
    • Patent number 1,861,525
    • Issue date Jun 7, 1932
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    1749671
    • Patent number 1,749,671
    • Issue date Mar 4, 1930
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...