UNT Libraries Government Documents Department - 2 Matching Results
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- Detachable Washer
- Patent for a detachable Washer which can be applied or removed from a bolt, without having to remove the bolt itself.
- Map Hanger
- Patent for improvements in map hangers. The purpose is to provide a map exhibiting hanger to use in support for a plurality of maps, particularly maps that have information on the back.