1378781

Information

• Patent Grant
• 1378781

• References
• Source

• Patent Number

  1,378,781

• Date Filed

  Not available

• Date Issued

  Tuesday, May 17, 1921
  103 years ago

• CPC

  • A61C17/24 - rotating continuously
  • Y10T74/1545 - Spring or weight return

• US Classifications

  • 015 - Brushing, scrubbing, and general cleaning
  • 074 - Machine element or mechanism
  • 185 - Motors: spring, weight, or animal powered