3670370

Information

• Patent Grant
• 3670370

• References
• Source

• Patent Number

  3,670,370

• Date Filed

  Not available

• Date Issued

  Tuesday, June 20, 1972
  52 years ago

• CPC

  • B42F9/001 - Clip boards
  • Y10T24/204 - Pivotally mounted on pintle
  • Y10T24/3437 - Coil spring biased

• US Classifications

  • 024 - Buckles, buttons, clasps, etc.
  • 281 - Books, strips, and leaves
  • D19 - Office supplies