FR892776A - Perfectionnements apportés aux procédés pour déterminer l'emplacement des pointsou lieux sur des cartes, plans de ville, plans et analogues
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Perfectionnements apportés aux procédés pour déterminer l'emplacement des pointsou lieux sur des cartes, plans de ville, plans et analogues
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G09B—EDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
G09B29/00—Maps; Plans; Charts; Diagrams, e.g. route diagram
G09B29/10—Map spot or coordinate position indicators; Map reading aids
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FR892776D1942-04-231943-03-23Perfectionnements apportés aux procédés pour déterminer l'emplacement des pointsou lieux sur des cartes, plans de ville, plans et analogues
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(fr)
Perfectionnements aux moyens pour situer dans le temps et, le cas échéant, dans l'espace, l'apparition, ou et la durée d'un phénomène, en particulier mesurer la vitesse de projectiles