Resource Type
Counties
3 Matching Results
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Thermostat.
Patent for an improved and automatic thermostat tool to regulate temperature including instructions and illustrations.
Date:
December 28, 1915
Creator:
Royall, John H.
System:
The Portal to Texas History
Oil-Burner
Patent for an oil burner for refined oil which vaporizes all the oil put into the burner.
Date:
May 4, 1909
Creator:
Breckenridge, William D.
System:
The Portal to Texas History
Oil-Burner.
Patent for an oil-burner, which can be turned on and off with a single switch.
Date:
May 4, 1909
Creator:
Breckenridge, William D.
System:
The Portal to Texas History