2554544

Information

• Patent Grant
• 2554544

• References
• Source

• Patent Number

  2,554,544

• Date Filed

  Not available

• Date Issued

  Tuesday, May 29, 1951
  73 years ago

• CPC

  • D05B87/04 - with optical devices to assist threading

• US Classifications

  • 359 - Optical: systems and elements
  • 112 - Sewing
  • 248 - Supports