1663959

Information

• Patent Grant
• 1663959

• References
• Source

• Patent Number

  1,663,959

• Date Filed

  Not available

• Date Issued

  Tuesday, March 27, 1928
  96 years ago

• CPC

  • G03C5/3014 - Hydrazine; Hydroxylamine; Urea; Derivatives thereof

• US Classifications

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