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Priority to CH1587771ApriorityCriticalpatent/CH551657A/xx
Publication of CH1587771A4publicationCriticalpatent/CH1587771A4/xx
Publication of CH551657ApublicationCriticalpatent/CH551657A/xx
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
G07C1/00—Registering, indicating or recording the time of events or elapsed time, e.g. time-recorders for work people
G—PHYSICS
G04—HOROLOGY
G04F—TIME-INTERVAL MEASURING
G04F8/00—Apparatus for measuring unknown time intervals by electromechanical means
G04F8/006—Apparatus for measuring unknown time intervals by electromechanical means running only during the time interval to be measured, e.g. stop-watch
G—PHYSICS
G07—CHECKING-DEVICES
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
G07C1/00—Registering, indicating or recording the time of events or elapsed time, e.g. time-recorders for work people
G07C1/02—Registering, indicating or recording the time of events or elapsed time, e.g. time-recorders for work people not involving the registering, indicating or recording of other data
G07C1/08—Registering, indicating or recording the time of events or elapsed time, e.g. time-recorders for work people not involving the registering, indicating or recording of other data wherein the time is indicated by marking an element, e.g. a card or tape, in position determined by the time