1751495

Information

• Patent Grant
• 1751495

• References
• Source

• Patent Number

  1,751,495

• Date Filed

  Not available

• Date Issued

  Tuesday, March 25, 1930
  94 years ago

• CPC

  • B42F21/10 - represented by slits

• US Classifications

  • 040 - Card, picture, or sign exhibiting
  • 116 - Signals and indicators