3420254

Information

• Patent Grant
• 3420254

• References
• Source

• Patent Number

  3,420,254

• Date Filed

  Not available

• Date Issued

  Tuesday, January 7, 1969
  56 years ago

• CPC

  • H04L17/28 - using pneumatic or hydraulic translation
  • F15C1/001 - for punched-card machines ; for typewriters ; for keyboards; for conveying cards or tape; for conveying through tubes ; for computers ; for dc-ac transducers for information processing ; for signal transmission
  • F42C15/22 - using centrifugal force
  • G06K7/02 - by pneumatic or hydraulic means
  • H04L13/10 - Distributors
  • Y10S200/05 - Fluid pressure: fluid amplifier

• US Classifications

  • 235 - Registers
  • 200 - Electricity: circuit makers and breakers