437632

Information

• Patent Grant
• 437632

• References
• Source

• Patent Number

  437,632

• Date Filed

  Not available

• Date Issued

  Tuesday, September 30, 1890
  134 years ago

• CPC

  • D04D1/02 - by twisting strands around centrally arranged cores
  • D02G3/06 - Threads formed from strip material other than paper

• US Classifications

  • 057 - Textiles: spinning, twisting, and twining
  • 174 - Electricity: conductors and insulators