3829997

Information

• Patent Grant
• 3829997

• References
• Source

• Patent Number

  3,829,997

• Date Filed

  Not available

• Date Issued

  Tuesday, August 20, 1974
  50 years ago

• CPC

  • G09F11/295 - Electric control therefor

• US Classifications

  • 040 - Card, picture, or sign exhibiting
  • 242 - Winding, tensioning, or guiding