1539549

Information

• Patent Grant
• 1539549

• References
• Source

• Patent Number

  1,539,549

• Date Filed

  Not available

• Date Issued

  Tuesday, May 26, 1925
  100 years ago

• CPC

  • E05F11/36 - specially designed for passing through a wall
  • Y10T74/18792 - including worm

• US Classifications

  • 074 - Machine element or mechanism