1389575

Information

• Patent Grant
• 1389575

• References
• Source

• Patent Number

  1,389,575

• Date Filed

  Not available

• Date Issued

  Tuesday, September 6, 1921
  103 years ago

• CPC

  • C09J101/18 - Cellulose nitrate
  • H04M3/12 - Marking faulty circuits "busy" Enabling equipment to disengage itself from faulty circuits; Using redundant circuits; Response of a circuit, apparatus or system to an error

• US Classifications

  • 106 - Compositions: coating or plastic