381700

Information

• Patent Grant
• 381700

• References
• Source

• Patent Number

  381,700

• Date Filed

  Not available

• Date Issued

  Tuesday, April 24, 1888
  137 years ago

• CPC

  • B24D99/00 - Subject matter not provided for in other groups of this subclass
  • B23F15/08 - Making intermeshing rotors
  • B23Q27/006 - by rolling without slippage two bodies of particular shape relative to each other
  • B24B5/01 - for combined grinding of surfaces of revolution and of adjacent plane surfaces on work
  • B24B19/08 - for grinding non-circular cross-sections
  • B24B33/05 - designed for working grooves

• US Classifications

  • 310 - Electrical generator or motor structure