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Individual
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Individual
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Application filed by IndividualfiledCriticalIndividual
Priority to ES92720UpriorityCriticalpatent/ES92720Y/en
Publication of ES92720UpublicationCriticalpatent/ES92720U/en
Application grantedgrantedCritical
Publication of ES92720YpublicationCriticalpatent/ES92720Y/en
A revolving backrest for chairs essentially characterized by being constituted by a narrow plate, provided laterally with two screws, which in collaboration with their corresponding nuts, imprison two lamellar tabs at their back, welded laterally to two hollow tubular sleeves, which are embraced, with the possibility of turning, to some through shanks inserted conveniently in the upper tubular stringers of which the frame of the chair itself consists. (Machine-translation by Google Translate, not legally binding)
ES92720U1962-04-121962-04-12
Swivel chair back
ExpiredES92720Y
(en)