1976639

Information

• Patent Grant
• 1976639

• References
• Source

• Patent Number

  1,976,639

• Date Filed

  Not available

• Date Issued

  Tuesday, October 9, 1934
  90 years ago

• CPC

  • A61C7/00 - Orthodontics, i.e. obtaining or maintaining the desired position of teeth
  • A61C7/065 - with a chin cup

• US Classifications

  • 033 - Geometrical instruments
  • 433 - Dentistry