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Priority to ES0028125UpriorityCriticalpatent/ES28125Y/en
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Abstract
A reversible and universal reel for photographic film, made of plastic material, polystyrene or derivatives, injected under pressure, which is characterized by having two axial extensions, of equal external diameter, on the outer face of each disc, presenting the base of one of these extensions an axial perforation, with annular relief in its mouth, followed by a conical cavity and the other base presents a cylindrical perforation with diametral crosspiece. (Machine-translation by Google Translate, not legally binding)
ES0028125U1951-09-141951-09-14
Reversible and universal spool for photographic film
ExpiredES28125Y
(en)