3855835

Information

• Patent Grant
• 3855835

• References
• Source

• Patent Number

  3,855,835

• Date Filed

  Not available

• Date Issued

  Tuesday, December 24, 1974
  50 years ago

• CPC

  • B21C47/18 - from reels or drums
  • B21C19/00 - Devices for straightening wire or like work combined with or specially adapted for use in connection with drawing or winding machines or apparatus
  • F16L1/203 - the pipes being wound spirally prior to laying

• US Classifications

  • 072 - Metal deforming
  • 405 - Hydraulic and earth engineering