ES33024U - New toy-electric mechanical device for learning to add, subtract, multiply and divide (Machine-translation by Google Translate, not legally binding)
- Google Patents
New toy-electric mechanical device for learning to add, subtract, multiply and divide (Machine-translation by Google Translate, not legally binding)
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Publication of ES33024YpublicationCriticalpatent/ES33024Y/en
"NEW TOY-ELECTRICAL MECHANICAL APPLIANCE TO LEARN TO ADD, REMAIN, MULTIPLY AND DIVIDE", characterized in that ninety-nine buttons are arranged on its upper surface, forming ten columns, each of which corresponds a number, which is indicated beside them, well written on the surface referred to or on movable sheets that will form tables with the desired progression, being also provided with a small lamp, capable of being replaced by a bell or push button, placed in the angle upper left of the aforementioned surface, which will light only in the event that the number pressed as a result of the proposed operation corresponds to the exact figure thereof. (Machine-translation by Google Translate, not legally binding)
ES0033024U1952-10-181952-10-18
New electric mechanical toy-device to learn to add, subtract, multiply and divide
ExpiredES33024Y
(en)
A procedure, with its corresponding device, for the manufacture of filling of tablets for boards (Machine-translation by Google Translate, not legally binding)