1929578

Information

• Patent Grant
• 1929578

• References
• Source

• Patent Number

  1,929,578

• Date Filed

  Not available

• Date Issued

  Tuesday, October 10, 1933
  91 years ago

• CPC

  • G04F1/066 - using electrical contact device

• US Classifications

  • 200 - Electricity: circuit makers and breakers
  • 968 - Horology