3718876

Information

• Patent Grant
• 3718876

• References
• Source

• Patent Number

  3,718,876

• Date Filed

  Not available

• Date Issued

  Tuesday, February 27, 1973
  52 years ago

• CPC

  • H01H67/24 - Co-ordinate-type relay switches having an individual electromagnet at each cross-point
  • H05K1/147 - at least one of the printed circuits being bent or folded
  • H05K1/0271 - Arrangements for reducing stress or warp in rigid printed circuit boards
  • H05K1/116 - Lands, clearance holes or other lay-out details concerning the surrounding of a via
  • H05K1/141 - One or more single auxiliary printed circuits mounted on a main printed circuit
  • H05K1/189 - characterised by the use of a flexible or folded printed circuit
  • H05K3/3447 - Lead-in-hole components
  • H05K3/363 - by soldering
  • H05K2201/049 - PCB for one component
  • H05K2201/09063 - Holes or slots in insulating substrate not used for electrical connections
  • H05K2201/10863 - Adaptations of leads or holes for facilitating insertion

• US Classifications

  • 335 - Electricity: magnetically operated switches, magnets, and electromagnets
  • 361 - Electricity: electrical systems and devices