UNT Libraries Government Documents Department - 2 Matching Results
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- Lap Ring.
- Patent for a new and improved carabiner ("lap ring"). This design calls for the hinged bar to interlock more with the body of the ring. This design prevents the stretching of the ring when bearing a heavy load, representing an improvement over previous designs.
- Roofing Construction
- Patent for a weatherproof roofing construction. Illustrations included.