Matches 101 - 129 out of 129 < 1 2 3
Match Document Document Title
3609227 RANDOM ACCESS AUDIO/VIDEO INFORMATION RETRIEVAL SYSTEM  
A random access retrieval system particularly adaptable as an instructional resource center, wherein master recording mediums feed audio or audio/video information recorded thereon in the form of...
3596007 APPARATUS FOR VARIABLE SPEED PLAYBACK OF PLURAL TRACK RECORDS  
An apparatus for playback of plural tracks of recorded information at selectively different track record speeds, the apparatus consisting of a record playback unit capable of playing back a...
3594919 TUTORING DEVICES  
Apparatus for dissemination of programmed information for purposes of tutoring and the like. The apparatus comprising a plural channel record and playback device, each channel being connected to...
3594505 INFORMATION DISTRIBUTION SYSTEM  
Apparatus for presenting information to a group in attention in a manner whereby the rate of information presentation is variable with respect to the group as a whole; the apparatus consists of a...
3579870 TEST ADMINISTERING APPARATUS  
A test administering apparatus has a plurality of tape playback units individually controllable by an examiner at a console to provide verbal instructions for, and to time a respective test, and...
3541271 DIAL OPERATED SEARCH CONTROL FOR TAPE RECORDER  
3532348 TEACHING DEVICE  
3508001 ELECTRIC RETRIEVAL SYSTEM  
3426339 INFORMATION STORAGE AND PLAYBACK SYSTEM  
3424872 RECORD-REPRODUCE MACHINE WITH SERVOCONTROLLED TRACK SELECTOR  
3395460 Educational device  
3392315 Tape reproducer including programmed motor stopping at various positions by conductive strips on tape and manual restart  
3383114 Teaching device  
3378639 Instruction apparatus for classrooms  
3367045 Key operated phonetic sound and reproducing device  
3322906 Magazine utilizing internal tape drive means  
3305645 System of recording program control signals  
3289327 Braille recording and reproducing means  
3238644 Child's switchboard phonograph  
3230644 Electronic braille instructor  
3222597 Audio system for instructing an operator in the performance of continuity testing  
3136072 Apparatus and method of teaching children the alphabet, numbers and the like  
3075303 Educational device  
2965720 Tape recorder monitoring system and start-stop device therefor  
2928186 Travel instruction apparatus  
2910785 Teaching device  
2855703 Oral alphabet and word teaching machine  
3553852 Title is not available  
3623242 Title is not available  
Matches 101 - 129 out of 129 < 1 2 3