3898706

Information

• Patent Grant
• 3898706

• References
• Source

• Patent Number

  3,898,706

• Date Filed

  Not available

• Date Issued

  Tuesday, August 12, 1975
  49 years ago

• CPC

  • F16B23/0023 - substantially cross-shaped
  • B21K1/463 - with recessed heads
  • F16B23/0076 - causing slipping of the tool in loosening rotation

• US Classifications

  • 470 - Threaded, headed fastener, or washer making: process and apparatus