1997507

Information

• Patent Grant
• 1997507

• References
• Source

• Patent Number

  1,997,507

• Date Filed

  Not available

• Date Issued

  Tuesday, April 9, 1935
  89 years ago

• CPC

  • G03C5/18 - Diazo-type processes
  • G03C1/56 - Diazo sulfonates

• US Classifications

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