Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
  • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
  • B41J5/00—Devices or arrangements for controlling character selection
  • B41J5/08—Character or syllable selected by means of keys or keyboards of the typewriter type
  • B41J5/18—Locks
  • B41J5/22—Interlocks between keys, e.g. without detent arrangements
  • B41J5/24—Interlocks between keys, e.g. without detent arrangements with detent arrangements
• • G—PHYSICS
  • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
  • G09B—EDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
  • G09B13/00—Teaching typing
  • G09B13/04—Devices used in association with a real typewriter, teleprinter, or the like

Landscapes

• Engineering & Computer Science (AREA)
• Business, Economics & Management (AREA)
• Physics & Mathematics (AREA)
• Educational Administration (AREA)
• Educational Technology (AREA)
• General Physics & Mathematics (AREA)
• Theoretical Computer Science (AREA)
• Input From Keyboards Or The Like (AREA)

Applications Claiming Priority (1)

Publications (1)

Family

ID=5681722

Family Applications (1)

Country Status (5)

Families Citing this family (4)

• 1968
  • 1968-09-23 SE SE12812/68A patent/SE348681B/xx unknown
  • 1968-10-04 US US765204A patent/US3536178A/en not_active Expired - Lifetime
  • 1968-10-08 GB GB47680/68A patent/GB1248447A/en not_active Expired
  • 1968-10-08 CH CH1499468A patent/CH480181A/de not_active IP Right Cessation
  • 1968-10-08 FR FR1588306D patent/FR1588306A/fr not_active Expired

Also Published As

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