Manufacture of multi-layer structures

Means for deterring misuse of copying machines

Method and apparatus for inhibiting the operation of a copying m

Method and apparatus for rewiring corona wire cartridge

Method and apparatus for rewiring corona wire cartridge

Method and apparatus for the prevention of unauthorized copying

Method for controlling the toner concentration in an electrostat

Method of and arrangement for monitoring photographic copying ap

Method of making representations of, and method of and means for

Method of producing solid-state color imaging devices

Method of recording pieces of image information of different kin

Microrecord having mirror-images

Multiple-unit type copying apparatus

Overlay test measurement systems

Photogrammetric measuring system

Production of prints

Protecting strips of photographic film

Refillable toner cartridge and method of manufacture thereof

Reusable electrical overlay measurement circuit and process

Scratch-resistant mask for photolithographic processing