3648912

Information

• Patent Grant
• 3648912

• References
• Source

• Patent Number

  3,648,912

• Date Filed

  Not available

• Date Issued

  Tuesday, March 14, 1972
  52 years ago

• CPC

  • F15C1/001 - for punched-card machines ; for typewriters ; for keyboards; for conveying cards or tape; for conveying through tubes ; for computers ; for dc-ac transducers for information processing ; for signal transmission
  • G06K13/26 - Winding-up or unwinding of record carriers Driving of record carriers
  • G06K13/30 - intermittently
  • G11B15/20 - Moving record carrier backwards or forwards by finite amounts

• US Classifications

  • 226 - Advancing material of indeterminate length
  • 242 - Winding, tensioning, or guiding
  • G9B - INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER