3217561

Information

• Patent Grant
• 3217561

• References
• Source

• Patent Number

  3,217,561

• Date Filed

  Not available

• Date Issued

  Tuesday, November 16, 1965
  59 years ago

• CPC

  • H04M9/08 - Two-way loud-speaking telephone systems with means for suppressing echoes or otherwise conditioning for one or other direction of traffic
  • B07B1/288 - Tumbling screens
  • B07B1/36 - jigging or moving to-and-fro in more than one direction
  • B07B1/38 - oscillating in a circular arc in their own plane plansifters
  • B07B1/42 - Drive mechanisms, regulating or controlling devices, or balancing devices, specially adapted for screens
  • H04M9/087 - using different frequency bands for transmitting and receiving paths ; using phase shifting arrangements
  • H04R3/08 - of electromagnetic transducers
  • Y10T74/18336 - Wabbler type
  • Y10T74/18544 - Rotary to gyratory
  • Y10T74/2179 - Adjustable

• US Classifications

  • 074 - Machine element or mechanism
  • 068 - Textiles: fluid treating apparatus
  • 209 - Classifying, separating, and assorting solids
  • 366 - Agitating