3642223

Information

• Patent Grant
• 3642223

• References
• Source

• Patent Number

  3,642,223

• Date Filed

  Not available

• Date Issued

  Tuesday, February 15, 1972
  52 years ago

• CPC

  • G03D13/14 - for holding films in spaced convolutions
  • B65H75/14 - with two end flanges
  • B65H75/22 - collapsible with removable parts
  • B65H2701/5122 - Plastics
  • B65H2701/5136 - Moulded plastic elements

• US Classifications

  • 242 - Winding, tensioning, or guiding