Pin tractor
Pinch roller moving devices for simultaneous image and sound...
Pipeline inspection apparatus
Pivotal, large area cinematographic screen for open-air...
Pivotally mounted spread roller assembly
Planetarium and point light source for the use in same
Planetary camera
Plastic-housed pocket-sized underwater camera system
Plastics mount for a photographic transparency
Plate-like polarizing element, a polarizing conversion unit...
Platen cover
Platen cover
Platen cover
Platen cover
Platen cover for copying machines
Plug and socket assemblies for flash cubes
Pneumatic exposure control
Pneumatically reactive photographic exposure control system
Polarization illumination device and projector having the same
Polarization integrator