1390442

Information

• Patent Grant
• 1390442

• References
• Source

• Patent Number

  1,390,442

• Date Filed

  Not available

• Date Issued

  Tuesday, September 13, 1921
  103 years ago

• CPC

  • B28C7/0858 - the skips being tilted

• US Classifications

  • 336 - Inductor devices