3868145

Information

• Patent Grant
• 3868145

• References
• Source

• Patent Number

  3,868,145

• Date Filed

  Not available

• Date Issued

  Tuesday, February 25, 1975
  50 years ago

• CPC

  • E02F3/966 - of hammer-type tools
  • B25D11/068 - in which the tool bit or anvil is hit by a rotary impulse member
  • E02F5/30 - Auxiliary apparatus
  • E21C27/28 - by percussive drills with breaking-down means
  • Y10S370/904 - Integrated Services Digital Network, ISDN

• US Classifications

  • 299 - Mining or in situ disintegration of hard material
  • 172 - Earth working
  • 173 - Tool driving or impacting
  • 370 - Multiplex communications