1428009

Information

• Patent Grant
• 1428009

• References
• Source

• Patent Number

  1,428,009

• Date Filed

  Not available

• Date Issued

  Tuesday, September 5, 1922
  102 years ago

• CPC

  • G03F5/24 - by multiple exposure
  • Y10S430/152 - Making camera copy

• US Classifications

  • 430 - Radiation imagery chemistry: process, composition, or product thereof