3639745

Information

• Patent Grant
• 3639745

• References
• Source

• Patent Number

  3,639,745

• Date Filed

  Not available

• Date Issued

  Tuesday, February 1, 1972
  53 years ago

• CPC

  • H02B1/048 - Snap mounting
  • H01H13/023 - Light-emitting indicators
  • H01H2009/183 - Provisions for enhancing the contrast between the illuminated symbol and the background or between juxtaposed symbols
  • H01H2013/026 - with two or more independent lighting elements located inside the push button switch that illuminate separate zones of push buttons

• US Classifications

  • 200 - Electricity: circuit makers and breakers
  • 174 - Electricity: conductors and insulators
  • 248 - Supports