1820804

Information

• Patent Grant
• 1820804

• References
• Source

• Patent Number

  1,820,804

• Date Filed

  Not available

• Date Issued

  Tuesday, August 25, 1931
  93 years ago

• CPC

  • B65D5/6647 - the lid-halves being held in closed position by application of separate elements
  • B65D5/643 - held in closed position by application of separate elements

• US Classifications

  • 229 - Envelopes, wrappers, and paperboard boxes