1661630

Information

• Patent Grant
• 1661630

• References
• Source

• Patent Number

  1,661,630

• Date Filed

  Not available

• Date Issued

  Tuesday, March 6, 1928
  96 years ago

• CPC

  • E21C25/62 - Machines for making slits approximately perpendicular to the seams either level with, or above or below the level of, the machine
  • Y10T74/2147 - Fluid cushion

• US Classifications

  • 074 - Machine element or mechanism
  • 060 - Power plants