2140657

Information

• Patent Grant
• 2140657

• References
• Source

• Patent Number

  2,140,657

• Date Filed

  Not available

• Date Issued

  Tuesday, December 20, 1938
  86 years ago

• CPC

  • C09D193/02 - Shellac

• US Classifications

  • 106 - Compositions: coating or plastic
  • 530 - Chemistry: natural resins or derivatives