Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Optische Industrie de Oude Delft NV
Original Assignee
Optische Industrie de Oude Delft NV
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Optische Industrie de Oude Delft NVfiledCriticalOptische Industrie de Oude Delft NV
Priority to ES0221240ApriorityCriticalpatent/ES221240A3/en
Publication of ES221240A3publicationCriticalpatent/ES221240A3/en
A centered optical system, characterized in that it comprises one or more conical elements. (Machine-translation by Google Translate, not legally binding)
ES0221240A1955-04-151955-04-15A centered optical system (Machine-translation by Google Translate, not legally binding)
ExpiredES221240A3
(en)