1534842

Information

• Patent Grant
• 1534842

• References
• Source

• Patent Number

  1,534,842

• Date Filed

  Not available

• Date Issued

  Tuesday, April 21, 1925
  100 years ago

• CPC

  • E05F13/04 - by platforms lowered by the weight of the user
  • E05F1/02 - gravity-actuated
  • E05F1/046 - with rectilinearly-inclined tracks for sliding wings

• US Classifications

  • 049 - Movable or removable closures