3794231

Information

• Patent Grant
• 3794231

• References
• Source

• Patent Number

  3,794,231

• Date Filed

  Not available

• Date Issued

  Tuesday, February 26, 1974
  51 years ago

• CPC

  • G03B1/54 - Tensionning or loop-maintaining devices
  • B65H20/36 - having means to optionally advance the web either in one longitudinal direction or in the opposite longitudinal direction
  • G03B21/43 - Driving mechanisms

• US Classifications

  • 226 - Advancing material of indeterminate length
  • 242 - Winding, tensioning, or guiding
  • 352 - Optics: motion pictures