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US1532880A
|
|
Mirrored lens protractor
|
|
US1532879A
|
|
Prism-measuring device in parallel systems
|
|
US1532878A
|
|
Lens protractor
|
|
US1526898A
|
|
Process of generating a depressed bifocal lens
|
|
US1487715A
|
|
Process of making a bifocal lens with merged surfaces
|
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US1506733A
|
|
Process of making multifocal lenses
|
|
US1427192A
|
|
Trifocal lens and process of making the same
|
|
US1426148A
|
|
Toric-lens series and process of making the same
|
|
US1426147A
|
|
Toric-lens series and process of making same
|
|
US1426146A
|
|
Toric-lens series and process of making same
|
|
US1410367A
|
|
Process of making bifocal lenses
|
|
US1372747A
|
|
Means for polishing multifocal lenses
|
|
US1406927A
|
|
Means for polishing multifocal lenses
|
|
US1397399A
|
|
Means for polishing multifocal lenses
|
|
US1455863A
|
|
Lens-edging machine
|
|
US1366159A
|
|
Lens-polishing machine
|
|
US1355211A
|
|
Lens-blccking device
|
|
US1333383A
|
|
Machine for making spotting-wheels for manufacturing lenses
|
|
US1387232A
|
|
Lens-grinding machine
|
|
US1483866A
|
|
Process of making toric lenses
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