1989748

Information

• Patent Grant
• 1989748

• References
• Source

• Patent Number

  1,989,748

• Date Filed

  Not available

• Date Issued

  Tuesday, February 5, 1935
  89 years ago

• CPC

  • G03B33/14 - using lenticular screens

• US Classifications

  • 396 - Photography
  • 359 - Optical: systems and elements
  • 430 - Radiation imagery chemistry: process, composition, or product thereof