2136133

Information

• Patent Grant
• 2136133

• References
• Source

• Patent Number

  2,136,133

• Date Filed

  Not available

• Date Issued

  Tuesday, November 8, 1938
  86 years ago

• CPC

  • C09B5/04 - Pyrazolanthrones

• US Classifications

  • 548 - Organic compounds
  • 432 - Heating