3927752

Information

• Patent Grant
• 3927752

• References
• Source

• Patent Number

  3,927,752

• Date Filed

  Not available

• Date Issued

  Tuesday, December 23, 1975
  49 years ago

• CPC

  • G06F3/0219 - Special purpose keyboards
  • B41J5/107 - for special purposes
  • Y10S400/90 - Chemical-symbol character
  • Y10S400/904 - Subscript or superscript character

• US Classifications

  • 400 - Typewriting machines