1991771

Information

• Patent Grant
• 1991771

• References
• Source

• Patent Number

  1,991,771

• Date Filed

  Not available

• Date Issued

  Tuesday, February 19, 1935
  89 years ago

• CPC

  • B24B47/08 - by mechanical gearing combined with fluid systems
  • Y10T74/18072 - Reciprocating carriage motions

• US Classifications

  • 074 - Machine element or mechanism
  • 451 - Abrading