1820941

Information

• Patent Grant
• 1820941

• References
• Source

• Patent Number

  1,820,941

• Date Filed

  Not available

• Date Issued

  Tuesday, September 1, 1931
  94 years ago

• CPC

  • E05F1/046 - with rectilinearly-inclined tracks for sliding wings
  • E05D15/12 - consisting of parts connected at their edges
  • E05F1/02 - gravity-actuated
  • E05F11/04 - with cords, chains or cables
  • E05F11/54 - for doors
  • E05Y2900/132 - Doors

• US Classifications

  • 160 - Flexible or portable closure, partition, or panel
  • 049 - Movable or removable closures