2981140

Information

• Patent Grant
• 2981140

• References
• Source

• Patent Number

  2,981,140

• Date Filed

  Not available

• Date Issued

  Tuesday, April 25, 1961
  64 years ago

• CPC

  • G09F9/405 - the selected character being projected on a common screen accommodating only one character at a time, to provide the same display position for all characters
  • G09G3/045 - Selecting complete characters

• US Classifications

  • 359 - Optical: systems and elements
  • 040 - Card, picture, or sign exhibiting
  • 235 - Registers
  • 345 - Computer graphics processing and selective visual display systems
  • 353 - Optics: image projectors
  • 380 - Cryptography