3712443

Information

• Patent Grant
• 3712443

• References
• Source

• Patent Number

  3,712,443

• Date Filed

  Not available

• Date Issued

  Tuesday, January 23, 1973
  52 years ago

• CPC

  • B41B27/28 - Control, indicating, or safety devices for individual operations or machine elements
  • G09G5/243 - Circuits for displaying proportional spaced characters or for kerning

• US Classifications

  • 400 - Typewriting machines
  • 345 - Computer graphics processing and selective visual display systems
  • 396 - Photography