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The ornamental design for a acoustic level calibrator, as shown and described.
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FIG. 1 is a perspectve view of a acoustic level calibrator, showing my new design;
FIG. 2 is a front elevational view thereof;
FIG. 3 is a rear elevational view thereof;
FIG. 4 is a left elevational view thereof, the right elevational view is a mirror image of the left elevational view;
FIG. 5 is a top plan view thereof; and
FIG. 6 is a bottom plan view thereof; and,
FIG. 7 is a perspective view thereof, the elements shown in broken lines is for illustrative purpose only and forms no part of the claimed design.
Patent | Priority | Assignee | Title |
D703783, | Sep 21 2012 | STEINERT SENSING SYSTEMS AS | Acoustic measuring instrument |
Patent | Priority | Assignee | Title |
4715219, | Sep 23 1985 | Aktieselskabet Bruel & Kajaer | Acoustic calibration device |
5567863, | May 15 1995 | Larson-Davis, Inc.; LARSON-DAVIS, INC | Intensity acoustic calibrator |
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