3522917

Information

• Patent Grant
• 3522917

• References
• Source

• Patent Number

  3,522,917

• Date Filed

  Not available

• Date Issued

  Tuesday, August 4, 1970
  54 years ago

• CPC

  • G03B21/321 - Holders for films
  • G03B1/40 - embodying frictional coupling or clutches

• US Classifications

  • 242 - Winding, tensioning, or guiding