Patent classifications
G
PHYSICS
Load children
G07
CHECKING-DEVICES
Load children
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
Load children
5/00
Registering or indicating the working of vehicles
Load children Filter patents View analytics View as hierarchy
G07C5/02
Registering or indicating driving, working, idle, or waiting time only
Load children Filter patents View analytics View as hierarchy
G07C5/04
using counting means or digital clocks
Filter patents View analytics View as hierarchy