1803171

Information

• Patent Grant
• 1803171

• References
• Source

• Patent Number

  1,803,171

• Date Filed

  Not available

• Date Issued

  Tuesday, April 28, 1931
  93 years ago

• CPC

  • B67B7/20 - for breaking vacuum seals between lids or covers and bodies of preserving jars

• US Classifications

  • 081 - Tools