656859

Information

• Patent Grant
• 656859

• References
• Source

• Patent Number

  656,859

• Date Filed

  Not available

• Date Issued

  Tuesday, August 28, 1900
  124 years ago

• CPC

  • C09B29/0051 - containing a six-membered heterocyclic ring with two nitrogen atoms

• US Classifications

  • 534 - Organic compounds
  • 237 - Heating systems