3900712

Information

• Patent Grant
• 3900712

• References
• Source

• Patent Number

  3,900,712

• Date Filed

  Not available

• Date Issued

  Tuesday, August 19, 1975
  49 years ago

• CPC

  • H01H13/70 - having a plurality of operating members associated with different sets of contacts
  • B41J5/12 - Construction of key buttons
  • B41J5/16 - Mounting or connecting key buttons on or to key levers
  • H01H2215/004 - Collapsible dome or bubble
  • H01H2215/012 - Positioning of individual dome
  • H01H2223/032 - with formations for assembling similar housings
  • H01H2223/054 - Mounting of key housings on same printed circuit
  • H01H2233/014 - Snap coupling
  • H01H2233/054 - Snap coupling
  • H01H2233/086 - Inserting
  • H01H2239/006 - Containing a capacitive switch or usable as such

• US Classifications

  • 200 - Electricity: circuit makers and breakers
  • 235 - Registers
  • 341 - Coded data generation or conversion
  • 361 - Electricity: electrical systems and devices
  • 400 - Typewriting machines