2220075

Information

• Patent Grant
• 2220075

• References
• Source

• Patent Number

  2,220,075

• Date Filed

  Not available

• Date Issued

  Tuesday, November 5, 1940
  84 years ago

• CPC

  • B41J23/20 - Fluid-pressure power drives
  • B41B27/00 - Control, indicating, or safety devices or systems for composing machines of various kinds or types
  • B41B27/04 - Keyboards
  • Y10T137/7929 - Spring coaxial with valve

• US Classifications

  • 400 - Typewriting machines
  • 137 - Fluid handling
  • 235 - Registers