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GUTIERREZ GOMEZ TESIFON
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GUTIERREZ GOMEZ TESIFON
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Application filed by GUTIERREZ GOMEZ TESIFONfiledCriticalGUTIERREZ GOMEZ TESIFON
Priority to ES0053523UpriorityCriticalpatent/ES53523Y/en
Publication of ES53523UpublicationCriticalpatent/ES53523U/en
Application grantedgrantedCritical
Publication of ES53523YpublicationCriticalpatent/ES53523Y/en
An improved peephole for doors, characterized by consisting of two parts each formed by a cylindrical body, with a wing at one of its ends, and an axial bore, in which the optical system is housed, which basically consists of a lens composed of three biconcave negative lenses, juxtaposed, located in a widening of the front part of one of the pieces, the lenses being held by a flange folded over the edge of the outermost and an eyepiece consisting of a planoconvex positive lens mounted analogously to the previous ones at the opposite end of the same piece. (Machine-translation by Google Translate, not legally binding)
ES0053523U1956-03-271956-03-27
Perfected door peephole
ExpiredES53523Y
(en)
Improvements in the optical instruments of great reach, such as telescopes, goggles and similar (Machine-translation by Google Translate, not legally binding)