2237228

Information

• Patent Grant
• 2237228

• References
• Source

• Patent Number

  2,237,228

• Date Filed

  Not available

• Date Issued

  Tuesday, April 1, 1941
  84 years ago

• CPC

  • A41H23/00 - Devices for applying chalk Sharpening or holding chalk

• US Classifications

  • 101 - Printing