3621939

Information

• Patent Grant
• 3621939

• References
• Source

• Patent Number

  3,621,939

• Date Filed

  Not available

• Date Issued

  Tuesday, November 23, 1971
  53 years ago

• CPC

  • F03G1/00 - Spring-motor
  • F03G2730/02 - Spring motors with helical springs
  • Y10S185/01 - Spring powered toys
  • Y10T74/1967 - Rack and pinion

• US Classifications

  • 185 - Motors: spring, weight, or animal powered
  • 074 - Machine element or mechanism