1869875

Information

• Patent Grant
• 1869875

• References
• Source

• Patent Number

  1,869,875

• Date Filed

  Not available

• Date Issued

  Tuesday, August 2, 1932
  93 years ago

• CPC

  • E21C3/18 - directly by a piston of an internal-combustion engine
  • Y10T74/18024 - Rotary to reciprocating and rotary
  • Y10T74/2173 - Cranks and wrist pins

• US Classifications

  • 173 - Tool driving or impacting
  • 074 - Machine element or mechanism
  • 175 - Boring or penetrating the earth