Resource Type
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Serial/Series Title
Country
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The San Angelo Formation [and] The Geology of Foard County
Two reports published in a scientific bulletin, describing the San Angelo Formation and the geology of Foard County.
Date:
February 15, 1926
Creator:
Christner, D. D. & Beede, J. W.
Object Type:
Journal/Magazine/Newsletter
System:
The Portal to Texas History
Hot-Air Mixer
Patent for a device that will create hot air to be delivered to the manifold of gas-powered engines in motor vehicles when the operator pushes a plunger that will open an intake valve.
Date:
March 9, 1920
Creator:
Ingraham, Jerome H.
Object Type:
Patent
System:
The Portal to Texas History
Quick-Adjustable Wrench.
Patent for a quick-adjustable wrench "of novel and improved construction, as well as being thoroughly practical and efficient in use" (lines 10-14), including illustrations.
Date:
June 20, 1920
Creator:
Shoopman, Andrew
Object Type:
Patent
System:
The Portal to Texas History