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FRANCOIS DE VRINT
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FRANCOIS DE VRINT
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Application filed by FRANCOIS DE VRINTfiledCriticalFRANCOIS DE VRINT
Application grantedgrantedCritical
Publication of FR423865ApublicationCriticalpatent/FR423865A/fr
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
G07C1/22—Registering, indicating or recording the time of events or elapsed time, e.g. time-recorders for work people in connection with sports or games
G07C1/26—Pigeon-timing or like equipment
Landscapes
Physics & Mathematics
(AREA)
General Physics & Mathematics
(AREA)
FR423865D1910-12-191910-12-19Perfectionnements aux appareils constateurs de l'heure d'arrivée des pigeons voyageurs
ExpiredFR423865A
(fr)