1863573

Information

• Patent Grant
• 1863573

• References
• Source

• Patent Number

  1,863,573

• Date Filed

  Not available

• Date Issued

  Tuesday, June 21, 1932
  92 years ago

• CPC

  • G03B19/08 - with provision for alternative use with plates or cut-films

• US Classifications

  • 396 - Photography
  • D16 - Photography and optical equipment