2222931

Information

• Patent Grant
• 2222931

• References
• Source

• Patent Number

  2,222,931

• Date Filed

  Not available

• Date Issued

  Tuesday, November 26, 1940
  84 years ago

• CPC

  • C07C21/12 - Tetrachloro-ethylene

• US Classifications

  • 570 - Organic compounds
  • 174 - Electricity: conductors and insulators