3673937

Information

• Patent Grant
• 3673937

• References
• Source

• Patent Number

  3,673,937

• Date Filed

  Not available

• Date Issued

  Tuesday, July 4, 1972
  52 years ago

• CPC

  • G03B15/00 - Special procedures for taking photographs Apparatus therefor
  • B41G3/00 - Apparatus for printing lines
  • B43L13/022 - automatic
  • G06K15/225 - using optical plotters

• US Classifications

  • 396 - Photography
  • 033 - Geometrical instruments