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Explosion-Hatch for Oil-Tanks.

Description: Patent for useful and new improvements in explosion hatches for oil tanks. This product specifically provides a hatch on the oil tank which will permit the escape of combustion gasses through the hatchway. It does so without damage to the hatch, case, or the tank. This provides additional safety and security for the operator.
Date: November 8, 1921
Creator: Hull, Burton E.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Electrical Tank-Gage.

Description: Patent for tank gages that use an electrical indicator to show fluid levels and waste that settles at the bottom of the tank.
Date: November 8, 1921
Creator: Bartlett, Ernest C. & Allison, Joseph, E.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department
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