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Individual
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Priority to ES1980249142UpriorityCriticalpatent/ES249142Y/en
Publication of ES249142UpublicationCriticalpatent/ES249142U/en
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Publication of ES249142YpublicationCriticalpatent/ES249142Y/en
Improved rolling device, which is applicable in generally light bodies driven manually on smooth surfaces, essentially characterized by comprising a hollow body with its flat lower base and with at least one sphere inside, whose sphere partially emerges from the flat base through a hole of smaller diameter than the sphere, being in addition to the diameter of said sphere slightly greater than the interior height of the hollow body in the vertical of the hole of the base. (Machine-translation by Google Translate, not legally binding)
ES1980249142U1980-03-051980-03-05
PERFECT ROLLING DEVICE
ExpiredES249142Y
(en)