3690432

Information

• Patent Grant
• 3690432

• References
• Source

• Patent Number

  3,690,432

• Date Filed

  Not available

• Date Issued

  Tuesday, September 12, 1972
  52 years ago

• CPC

  • H04L13/16 - of transmitters
  • B41J5/08 - Character or syllable selected by means of keys or keyboards of the typewriter type
  • H03K17/972 - having a plurality of control members

• US Classifications

  • 400 - Typewriting machines
  • 235 - Registers
  • 335 - Electricity: magnetically operated switches, magnets, and electromagnets