1942073

Information

• Patent Grant
• 1942073

• References
• Source

• Patent Number

  1,942,073

• Date Filed

  Not available

• Date Issued

  Tuesday, January 2, 1934
  90 years ago

• CPC

  • G09F13/36 - co-operating with rotating screening means

• US Classifications

  • 040 - Card, picture, or sign exhibiting
  • 439 - Electrical connectors