Demonstration tool

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Description

FIG. 1 is a left right side elevational view of a demonstration tool, wherein the demonstration tool's cover is in an open position;

FIG. 2 is a front view thereof;

FIG. 3 is a rear view thereof;

FIG. 4 is a left side view thereof;

FIG. 5 is a right side view thereof;

FIG. 6 is a top plan view thereof;

FIG. 7 is a bottom view thereof; and,

FIG. 8 is a front perspective view thereof.

Claims

The ornamental design for a demonstration tool, as shown and described.

Referenced Cited
U.S. Patent Documents
D130399 November 1941 Volf
D255038 May 20, 1980 Itakura
D328765 August 18, 1992 Strom, Jr.
D358408 May 16, 1995 McGarry
D474596 May 20, 2003 Osiecki
D525429 July 25, 2006 Lalwani
D619089 July 6, 2010 Chen
D657560 April 17, 2012 Schulz
D839583 February 5, 2019 Cao
D859519 September 10, 2019 Ye
D870451 December 24, 2019 Birger
Foreign Patent Documents
2002204881 July 2002 JP
2004016660 January 2004 JP
Patent History
Patent number: D880153
Type: Grant
Filed: Jul 9, 2018
Date of Patent: Apr 7, 2020
Assignee: Carl Zeiss Vision International GmbH (Aalen)
Inventor: Matthias Marx (Gschwend)
Primary Examiner: Holly E Thurman
Application Number: 29/655,958
Classifications
Current U.S. Class: D3/274