ES57257U - Optical device for the superposition in the retina of virtual images of real objects and of the board or drawing sheet (Machine-translation by Google Translate, not legally binding)
- Google Patents
Optical device for the superposition in the retina of virtual images of real objects and of the board or drawing sheet (Machine-translation by Google Translate, not legally binding)
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.)
Exacta SA
Original Assignee
Exacta SA
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 Exacta SAfiledCriticalExacta SA
Priority to ES0057257UpriorityCriticalpatent/ES57257Y/en
Publication of ES57257UpublicationCriticalpatent/ES57257U/en
Application grantedgrantedCritical
Publication of ES57257YpublicationCriticalpatent/ES57257Y/en
Folding Of Thin Sheet-Like Materials, Special Discharging Devices, And Others
(AREA)
Abstract
Optical device for the superposition in the retina of the virtual images of the real objects and of the board or drawing sheet, characterized by being constituted by two well differentiated parts: the support and the optical instrument, the first consisting of a U-shaped flange equipped with a manually operated grub screw, with a flat base that presses against the bottom flat part of the drawing board or table, thus being solidly fixed. (Machine-translation by Google Translate, not legally binding)
ES0057257U1956-11-081956-11-08
Optical device for superposition on the retina of virtual images of real objects and of the drawing board or sheet
ExpiredES57257Y
(en)
Optical device for the superposition in the retina of virtual images of real objects and of the board or drawing sheet (Machine-translation by Google Translate, not legally binding)
Procedure for manufacturing a table for drawing and retouching in lithographies, photographs, photographs and drawing (Machine-translation by Google Translate, not legally binding)