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Indicator For Bottles

Description: Patent for an indicator to show the amount of liquid removed and the amount remaining for bottles or other liquid packages of different dimensions and will help improve the process of refilling the bottle after liquid has been removed.
Date: May 8, 1906
Creator: Frkovic, Frank Andre
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Grease-Trap.

Description: Patent for a grease-trap that improves on a patent previously granted to the inventor (No. 506,690). The improvement includes providing "a strainer device for sewer traps, and the like, which will prevent any solid matter passing therethrough, and at the same time capable of being removed for the purpose of cleansing, repairs or other purposes" (lines 22-26).
Date: May 8, 1894
Creator: Heffron, Isaac
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Rotary Engine

Description: Patent is for a rotary engine. The design of this rotary engine includes an inlet and exhaust that also prevents internal leakage of working fluid under pressure.
Date: May 8, 1912
Creator: Bennison, Samuel
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department
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