629447

Information

• Patent Grant
• 629447

• References
• Source

• Patent Number

  629,447

• Date Filed

  Not available

• Date Issued

  Tuesday, July 25, 1899
  125 years ago

• CPC

  • F23M7/00 - Doors
  • Y10T16/53988 - On axially twisted or helically fluted element

• US Classifications

  • 110 - Furnaces
  • 016 - Miscellaneous hardware
  • 049 - Movable or removable closures