1798890

Information

• Patent Grant
• 1798890

• References
• Source

• Patent Number

  1,798,890

• Date Filed

  Not available

• Date Issued

  Tuesday, March 31, 1931
  93 years ago

• CPC

  • B21G1/06 - of needles with hook or barb
  • Y10T29/49845 - by deforming interlock
  • Y10T29/49938 - Radially expanding part in cavity, aperture, or hollow body

• US Classifications

  • 219 - Electric heating
  • 029 - Metal working
  • 066 - Textiles: knitting