System for magnetically attaching templeless eyewear to a person
A system of eyewear that eliminates the need for hinges on the frames of the eyewear.
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| Number | Title | Issue Date |
| 4203737 | Pocket or tube filters A filtering separator, in particular a pocket or tube filter, of the kind in which smoke-laden gas containing dust particles of particularly great adhesiveness is fed into a dust collecting trough of a filter housing at the bottom and upwards towards filt... | 05/20/1980 |
| 4157900 | Tube filters This invention relates to a tube filter assembly of the kind comprising a housing divided by a perforated wall into a dirty gas chamber and a clean gas chamber, and containing filter tubes which are attached to said perforated wall in a sealed fashion and... | 06/12/1979 |