Patent
   D312219
Priority
Mar 10 1988
Filed
Mar 10 1988
Issued
Nov 20 1990
Expiry
Nov 20 2004
Assg.orig
Entity
unknown
4
4
n/a
The design for a liquid level detector, as described and shown.

FIG. 1 is a top, front, and left side perspective view of a liquid level detector showing my new design;

FIG. 2 is a front elevational view;

FIG. 3 is a right side elevational view;

FIG. 4 is a left side elevational view; and

FIG. 5 is a bottom plan view thereof.

Fathauer, George H., Pratt, Ryder

Patent Priority Assignee Title
D816525, Aug 09 2016 Hokuriku Electric Industry Co., Ltd. Pressure sensitive sensor
D896113, Sep 03 2018 SHENZHEN INTELLIROCKS TECH. CO., LTD. Leakage detector
D897227, Mar 25 2020 Water leak sensor
D939980, Jun 17 2019 GUARD, INC Data and sensor system hub
Patent Priority Assignee Title
4638666, Nov 20 1985 Lumen Electronics Corporation Movable gauge housing
218707,
D293558, Nov 13 1984 Skandiafabriken AB Liquid level gauge
54584,
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Executed onAssignorAssigneeConveyanceFrameReelDoc
Feb 16 1988PRATT, RYDERWATERWATCH, INC ASSIGNMENT OF ASSIGNORS INTEREST 0048720171 pdf
Feb 16 1988FATHAUER, GEORGE H WATERWATCH, INC ASSIGNMENT OF ASSIGNORS INTEREST 0048720171 pdf
Mar 10 1988Waterwatch, Inc.(assignment on the face of the patent)
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