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The ornamental design for a "pressure checking apparatus for swimming pool", as shown and described.
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FIG. 1 is a front elevational view of a pressure checking apparatus for swimming pool, showing my new design;
FIG. 2 is a rear elevational view thereof.
FIG. 3 is a right side elevation view thereof;
FIG. 4 is a left side elevation view thereof;
FIG. 5 is a top plan view thereof; and,
FIG. 6 is a bottom plan view thereof.
| Patent | Priority | Assignee | Title |
| Patent | Priority | Assignee | Title |
| 4527429, | Dec 21 1983 | Aladdin Equipment Company | Pressure indicator |
| 5201212, | Feb 13 1991 | TANKNOLOGY INC | Line leak detector and method |
| 5653191, | Mar 01 1994 | Pressure indicator | |
| D254781, | Sep 16 1977 | Pressure gauge | |
| D353113, | Nov 17 1992 | UNILAB HOLDINGS LIMITED | Pressure gauge |
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