1444682

Information

• Patent Grant
• 1444682

• References
• Source

• Patent Number

  1,444,682

• Date Filed

  Not available

• Date Issued

  Tuesday, February 6, 1923
  102 years ago

• CPC

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

• US Classifications

  • 396 - Photography