|
The ornamental design for a well casing security unit, as shown and described. |
FIG. 1 is an environmental perspective view of a well casing security device showing my new design;
FIG. 2 is a front elevational view with the rear being a mirror image thereof;
FIG. 3 is a right side elevational view with the left side being a mirror image thereof;
FIG. 4 is a top view thereof; and,
FIG. 5 is a bottom view thereof.
The broken line showing of a pipe and elbow in FIG. 1 is for illustrative purposes only and forms no part of the claimed design.
Patent | Priority | Assignee | Title |
Patent | Priority | Assignee | Title |
2931379, | |||
2957524, | |||
4411312, | Aug 26 1980 | Hewing Manufacturing Corporation | Water-tight conduit well cap |
4461597, | Apr 27 1983 | Valve box cover | |
4747453, | Mar 06 1987 | Security cover and housing for a well | |
49599, | |||
5111879, | Jun 06 1990 | MERRILL LYNCH CAPITAL CORPORATION, AS COLLATERAL AGENT | Sanitary locking lip split well seal |
524666, | |||
D351892, | Nov 09 1992 | MRLB INTERNATIONAL, INC | Water purification cartridge for a dental instrument |
D357058, | Feb 24 1994 | RCT TECHNOLOGIES, L L C | Water purification unit |
D358448, | Dec 29 1993 | Hach Company | Flow cell for laboratory turbidimeter |
D372295, | Jul 24 1995 | Water filtration unit | |
4483, | |||
7772, | |||
7902, |
Executed on | Assignor | Assignee | Conveyance | Frame | Reel | Doc |
Date | Maintenance Fee Events |
Date | Maintenance Schedule |