1997257

Information

• Patent Grant
• 1997257

• References
• Source

• Patent Number

  1,997,257

• Date Filed

  Not available

• Date Issued

  Tuesday, April 9, 1935
  89 years ago

• CPC

  • B65D65/18 - with some areas transparent and others opaque

• US Classifications

  • 229 - Envelopes, wrappers, and paperboard boxes
  • 040 - Card, picture, or sign exhibiting