1438592

Information

• Patent Grant
• 1438592

• References
• Source

• Patent Number

  1,438,592

• Date Filed

  Not available

• Date Issued

  Tuesday, December 12, 1922
  102 years ago

• CPC

  • H01B7/10 - Contact cables
  • G08B13/10 - by pressure on floors, floor coverings, stair treads, counters, or tills
  • Y10S200/35 - Weight operated tread/treadless switch

• US Classifications

  • 200 - Electricity: circuit makers and breakers
  • 340 - Communications: electrical