1831606

Information

• Patent Grant
• 1831606

• References
• Source

• Patent Number

  1,831,606

• Date Filed

  Not available

• Date Issued

  Tuesday, November 10, 1931
  93 years ago

• CPC

  • A61C13/06 - made by punching

• US Classifications

  • 433 - Dentistry
  • 164 - Metal founding