2778173

Information

• Patent Grant
• 2778173

• References
• Source

• Patent Number

  2,778,173

• Date Filed

  Not available

• Date Issued

  Tuesday, January 22, 1957
  68 years ago

• CPC

  • B65D33/01 - Ventilation or drainage of bags
  • B65D81/2023 - in a flexible container
  • Y10S206/829 - Vacuum, or suction, cup adjunct

• US Classifications

  • 053 - Package making
  • 206 - Special receptacle or package
  • 383 - Flexible bags