2722639

Information

• Patent Grant
• 2722639

• References
• Source

• Patent Number

  2,722,639

• Date Filed

  Not available

• Date Issued

  Tuesday, November 1, 1955
  69 years ago

• CPC

  • B65H23/1806 - in reel-to-reel type web winding and unwinding mechanism
  • B65H23/1813 - acting on web-roll

• US Classifications

  • 318 - Electricity: motive power systems
  • 242 - Winding, tensioning, or guiding