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The ornamental design for a combination ball valve and check valve, as shown and described. |
FIG. 1 is a perspective view of the combination ball valve and check valve showing my new design.
FIG. 2 is a top plan view thereof;
FIG. 3 is a bottom plan view thereof;
FIG. 4 is a left end elevational view thereof;
FIG. 5 is a right end elevational view thereof;
FIG. 6 is a rear elevational view thereof; and,
FIG. 7 is a front elevational view thereof.
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Executed on | Assignor | Assignee | Conveyance | Frame | Reel | Doc |
Jan 27 1989 | MILO, JOSEPH V | UNIVERSAL VALVE COMPANY, INC | ASSIGNMENT OF ASSIGNORS INTEREST | 005050 | /0490 | |
Feb 28 1989 | Universal Valve Company, Inc. | (assignment on the face of the patent) | / |
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