Acoustic level calibrator

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Description

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.

Claims

The ornamental design for a acoustic level calibrator, as shown and described.

Referenced Cited
U.S. Patent Documents
4715219 December 29, 1987 Frederiksen
5567863 October 22, 1996 Larson et al.
Patent History
Patent number: D476910
Type: Grant
Filed: Sep 24, 2002
Date of Patent: Jul 8, 2003
Inventor: Li-Chuan Chen (Taipei)
Primary Examiner: Antoine Duval Davis
Attorney, Agent or Law Firm: Bacon & Thomas, PLLC
Application Number: 29/167,885
Classifications
Current U.S. Class: Measuring, Regulating Or Indicating Instrument, Or Casing (D10/46)
International Classification: 1004;