1996481

Information

• Patent Grant
• 1996481

• References
• Source

• Patent Number

  1,996,481

• Date Filed

  Not available

• Date Issued

  Tuesday, April 2, 1935
  89 years ago

• CPC

  • G03B17/44 - Means for exchanging focusing screen and light sensitive material

• US Classifications

  • 396 - Photography
  • 355 - Photocopying