Improvements to ophthalmic lenses with progressively variable focal power
FR1503973A
Eyeglass frame hinge
FR1501843A
Improvements to cutting tools
FR1495545A
Device for adjusting the orientation of an axis articulated around a point on a support, applicable in particular to the bases of topometric devices
FR1506352A
Improvements in pupillary distance measurement devices
FR1493482A
Device for placing spectacle lenses on the grinding machine according to the pupillary distance of the wearer and the center distance of the arches of the frame
FR1474896A
Device for measuring the transverse offset of an element with respect to an alignment
FR1471186A
Improvements to geodesy devices
FR1448926A
Improvements to overflow machines
FR1428548A
Method for attaching hubcaps to plastic spectacle frames
FR1428549A
Improvements to spectacle frames
US2982058A
Cutting machine, in particular for spheroidal or toroidal surfaces
