1994420

Information

• Patent Grant
• 1994420

• References
• Source

• Patent Number

  1,994,420

• Date Filed

  Not available

• Date Issued

  Tuesday, March 12, 1935
  89 years ago

• CPC

  • B28D1/226 - with plural scoring tools
  • B28D1/225 - for scoring or breaking

• US Classifications

  • 125 - Stone working
  • 033 - Geometrical instruments