3907440

Information

• Patent Grant
• 3907440

• References
• Source

• Patent Number

  3,907,440

• Date Filed

  Not available

• Date Issued

  Tuesday, September 23, 1975
  49 years ago

• CPC

  • G01N21/8915 - non-woven textile material
  • B65H63/0324 - using photo-electric sensing means
  • B65H63/086 - responsive to completion of unwinding of a package
  • D03D51/34 - Weft stop motions
  • B65H2557/61 - for calibrating
  • B65H2701/31 - Textiles threads or artificial strands of filaments
  • D03D2700/313 - electrical

• US Classifications

  • 356 - Optics: measuring and testing
  • 250 - Radiant energy