1801863

Information

• Patent Grant
• 1801863

• References
• Source

• Patent Number

  1,801,863

• Date Filed

  Not available

• Date Issued

  Tuesday, April 21, 1931
  93 years ago

• CPC

  • E05F15/611 - for swinging wings
  • E05Y2900/132 - Doors
  • Y10T74/19186 - Alternating rotary or continuous

• US Classifications

  • 049 - Movable or removable closures
  • 074 - Machine element or mechanism