1823130

Information

• Patent Grant
• 1823130

• References
• Source

• Patent Number

  1,823,130

• Date Filed

  Not available

• Date Issued

  Tuesday, September 15, 1931
  93 years ago

• CPC

  • B41J5/12 - Construction of key buttons
  • B41J3/32 - for printing in Braille or with keyboards specially adapted for use by blind or disabled persons
  • H01H2217/014 - handicapped
  • H01H2217/024 - Profile on actuator

• US Classifications

  • 400 - Typewriting machines
  • 235 - Registers
  • 434 - Education and demonstration