G07C—TIME OR ATTENDANCE REGISTERS; REGISTERING OR INDICATING THE WORKING OF MACHINES; GENERATING RANDOM NUMBERS; VOTING OR LOTTERY APPARATUS; ARRANGEMENTS, SYSTEMS OR APPARATUS FOR CHECKING NOT PROVIDED FOR ELSEWHERE
G07C15/00—Generating random numbers; Lottery apparatus
Landscapes
Physics & Mathematics
(AREA)
General Physics & Mathematics
(AREA)
Photoreceptors In Electrophotography
(AREA)
Non-Silver Salt Photosensitive Materials And Non-Silver Salt Photography
(AREA)