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6 Matching Results
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Improvement in Combining Bitumen and Clay.
Patent for a method of combining bitumen, water, and clay for such purposes as plastering.
Date:
September 24, 1872
Creator:
Lea, Pryor
Object Type:
Patent
System:
The Portal to Texas History
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.
Date:
September 26, 1876
Creator:
Lea, Pryor
Object Type:
Patent
System:
The Portal to Texas History
Hay-Press
Patent for improvements in hay presses "to simplify and cheapen the construction and render it more efficient in the formation of the hay into bales" (lines 16-18).
Date:
September 3, 1889
Creator:
McNeill, Charles De Witte
Object Type:
Patent
System:
The Portal to Texas History
Wrench
Patent for Wrench
Date:
September 12, 1916
Creator:
Ponton, Henry H
Object Type:
Patent
System:
The Portal to Texas History
Primary Care Case Management Primary Care Provider and Hospital List: Upper South Texas, September 2011
List of Primary Care Case Management program approved primary care providers, hospitals, specialists, and family planning providers, located in the Upper South Texas area.
Date:
September 2011
Creator:
Primary Care Case Management
Object Type:
Book
System:
The Portal to Texas History
Feeding Mechanism for Cotten-Gins
Patent related to cotton ginning plants, providing an improvement to the "mechanism controlling the feeding of the cotton supplied to the gins" (lines 13-14).
Date:
September 23, 1913
Creator:
Riemenschneider, Adolph
Object Type:
Patent
System:
The Portal to Texas History