1781984

Information

• Patent Grant
• 1781984

• References
• Source

• Patent Number

  1,781,984

• Date Filed

  Not available

• Date Issued

  Tuesday, November 18, 1930
  94 years ago

• CPC

  • B04B9/10 - Control of the drive Speed regulating
  • Y10S220/20 - Safety locking devices

• US Classifications

  • 210 - Liquid purification or separation
  • 220 - Receptacles