1679694

Information

• Patent Grant
• 1679694

• References
• Source

• Patent Number

  1,679,694

• Date Filed

  Not available

• Date Issued

  Tuesday, August 7, 1928
  96 years ago

• CPC

  • G03C7/10 - with regular areas of colour
  • Y10S430/141 - Direct positive material

• US Classifications

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