1531939

Information

• Patent Grant
• 1531939

• References
• Source

• Patent Number

  1,531,939

• Date Filed

  Not available

• Date Issued

  Tuesday, March 31, 1925
  99 years ago

• CPC

  • H01H3/34 - using ratchet

• US Classifications

  • 200 - Electricity: circuit makers and breakers