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Machines for filling tubes with sand

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Industry

  • CPC
  • B21D9/165
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Parent Industries

BPERFORMING OPERATIONS TRANSPORTING B21Mechanical metalworking B21DWORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING METAL B21D9/00Bending tubes using mandrels or the like

Current Industry

B21D9/165Machines for filling tubes with sand
Industries

Patents Grantslast 30 patents

  • Information Patent Grant

    1518202
    • Patent number 1,518,202
    • Issue date Dec 9, 1924
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    1341277
    • Patent number 1,341,277
    • Issue date May 25, 1920
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...

Patents Applicationslast 30 patents