1920343

Information

• Patent Grant
• 1920343

• References
• Source

• Patent Number

  1,920,343

• Date Filed

  Not available

• Date Issued

  Tuesday, August 1, 1933
  92 years ago

• CPC

  • B27M3/30 - of bobbins
  • B27M3/002 - characterised by oblong elements connected at their ends

• US Classifications

  • 144 - Woodworking