3646569

Information

• Patent Grant
• 3646569

• References
• Source

• Patent Number

  3,646,569

• Date Filed

  Not available

• Date Issued

  Tuesday, February 29, 1972
  52 years ago

• CPC

  • G01D15/30 - for foldable strip charts

• US Classifications

  • 346 - Recorders
  • 226 - Advancing material of indeterminate length
  • 242 - Winding, tensioning, or guiding