1692928

Information

• Patent Grant
• 1692928

• References
• Source

• Patent Number

  1,692,928

• Date Filed

  Not available

• Date Issued

  Tuesday, November 27, 1928
  96 years ago

• CPC

  • A61C13/1013 - Arch forms

• US Classifications

  • 433 - Dentistry
  • 033 - Geometrical instruments