1808213

Information

• Patent Grant
• 1808213

• References
• Source

• Patent Number

  1,808,213

• Date Filed

  Not available

• Date Issued

  Tuesday, June 2, 1931
  93 years ago

• CPC

  • G06F7/40 - using contact- making devices
  • B41J5/14 - Construction of key levers
  • G06C7/02 - Keyboards
  • G06C9/00 - Transfer mechanisms
  • G06C25/00 - Auxiliary functional arrangements
  • G06C27/00 - Computing machines characterised by the structural interrelation of their functional units
  • G06F3/09 - Digital output to typewriters
  • G06F7/38 - Methods or arrangements for performing computations using exclusively denominational number representation
  • H04L17/00 - Apparatus or local circuits for transmitting or receiving codes wherein each character is represented by the same number of equal-length code elements
  • Y10T74/20244 - Push button

• US Classifications

  • 235 - Registers
  • 074 - Machine element or mechanism