3690299

Information

• Patent Grant
• 3690299

• References
• Source

• Patent Number

  3,690,299

• Date Filed

  Not available

• Date Issued

  Tuesday, September 12, 1972
  52 years ago

• CPC

  • E06B7/32 - Serving doors Passing-through doors; Pet-doors
  • Y10S160/08 - Flexible door

• US Classifications

  • 119 - Animal husbandry
  • 049 - Movable or removable closures
  • 160 - Flexible or portable closure, partition, or panel
  • D25 - Building units and construction elements
  • D30 - Animal husbandry