TREA

Double twist coil springs

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Industry

  • CPC
  • B21F35/006
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Parent Industries

BPERFORMING OPERATIONS TRANSPORTING B21Mechanical metalworking B21FWORKING OR PROCESSING OF METAL WIRE B21F35/00Making springs from wire

Current Industry

B21F35/006Double twist coil springs
Industries

Patents Grantslast 30 patents

  • Information Patent Grant

    Helically-wound cable and method
    • Patent number 8,250,844
    • Issue date Aug 28, 2012
    • W. C. Heraeus GmbH
    • Jacob E. Markham
    • B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
  • Information Patent Grant

    Method for producing helically wound filament elements, and filamen...
    • Patent number 6,161,598
    • Issue date Dec 19, 2000
    • Patent-Treuhand-Gesellschaft Fuer Elektrische Gluehlampen mbH
    • Juergen Eder
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    Twist `N` curl
    • Patent number 5,966,811
    • Issue date Oct 19, 1999
    • Donna Zalusky
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    1953502
    • Patent number 1,953,502
    • Issue date Apr 3, 1934
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    1529441
    • Patent number 1,529,441
    • Issue date Mar 10, 1925
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...

Patents Applicationslast 30 patents

  • Information Patent Application

    HELICALLY-WOUND CABLE AND METHOD
    • Publication number 20100093448
    • Publication date Apr 15, 2010
    • HERAEUS
    • Jacob E. Markham
    • B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR