2157052

Information

• Patent Grant
• 2157052

• References
• Source

• Patent Number

  2,157,052

• Date Filed

  Not available

• Date Issued

  Tuesday, May 2, 1939
  85 years ago

• CPC

  • B42F21/08 - in one of a number of predetermined positions

• US Classifications

  • 040 - Card, picture, or sign exhibiting