3621348

Information

• Patent Grant
• 3621348

• References
• Source

• Patent Number

  3,621,348

• Date Filed

  Not available

• Date Issued

  Tuesday, November 16, 1971
  53 years ago

• CPC

  • H02P5/50 - by comparing electrical values representing the speeds
  • B21D43/05 - specially adapted for multi-stage presses
  • B30B15/146 - for synchronising a line of presses
  • B30B15/148 - Electrical control arrangements

• US Classifications

  • 318 - Electricity: motive power systems