UNT Libraries Government Documents Department - 2 Matching Results
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- Combined Safety-Valve and Waste-Cock.
- Patent for a combined safety valve and waste cock for cooling engines.
- Improvement in Mixing Mineral and Fossil Substances with Bituminized Clay to Form a Plastic Material.
- Reissued patent for a chemical process to create a plastic material made of bitumen, clay, and mineral and/or fossil substances.