|
US3721493A
|
|
Audio visual means
|
|
US3696899A
|
|
Leak-proof fluid coupling
|
|
US3773412A
|
|
Non-regular five blade shutter
|
|
US3566052A
|
|
Program control means
|
|
US3476475A
|
|
Film strip adapter
|
|
US3490837A
|
|
Projector with film threading means
|
|
US3480282A
|
|
Automatic record player
|
|
US3477008A
|
|
Stall detector for rotatable shaft
|
|
US3444354A
|
|
Control means for copy machines
|
|
IL24645A
|
|
Dry copy machines
|
|
US3420464A
|
|
Strip film adapter
|
|
US3393960A
|
|
Automatic film loading means
|
|
US3402983A
|
|
Motion picture film reader
|
|
US3404937A
|
|
Motion picture projection using optical and magnetic sound tracks
|
|
US3272967A
|
|
Lamp control means
|
|
US3219794A
|
|
Thermographic dry copying machine
|
|
US3259010A
|
|
Synchronizing means for audio-visual apparatus
|
|
US3216138A
|
|
Continuous sequence slide projector means
|
|
US3187626A
|
|
Automatic audio strip film projector
|
|
US3070915A
|
|
Slide title means
|
