1938734

Information

• Patent Grant
• 1938734

• References
• Source

• Patent Number

  1,938,734

• Date Filed

  Not available

• Date Issued

  Tuesday, December 12, 1933
  91 years ago

• CPC

  • G03C7/06 - Manufacture of colour screens

• US Classifications

  • 252 - Compositions
  • 106 - Compositions: coating or plastic
  • 351 - Optics: eye examining, vision testing and correcting
  • 359 - Optical: systems and elements
  • 430 - Radiation imagery chemistry: process, composition, or product thereof