1878987

Information

• Patent Grant
• 1878987

• References
• Source

• Patent Number

  1,878,987

• Date Filed

  Not available

• Date Issued

  Tuesday, September 20, 1932
  92 years ago

• CPC

  • C09B5/2418 - only oxygen-containing hetero rings

• US Classifications

  • 549 - Organic compounds