3549939

Information

• Patent Grant
• 3549939

• References
• Source

• Patent Number

  3,549,939

• Date Filed

  Not available

• Date Issued

  Tuesday, December 22, 1970
  54 years ago

• CPC

  • G09G1/22 - using tubes permitting selection of a complete character from a number of characters
  • B41B19/01 - having electron-beam tubes producing an image of at least one character which is photographed
  • H01J31/16 - with mask carrying a number of selectively displayable signs

• US Classifications

  • 396 - Photography
  • 313 - Electric lamp and discharge devices
  • 315 - Electric lamp and discharge devices: systems
  • 345 - Computer graphics processing and selective visual display systems
  • 347 - Incremental printing of symbolic information