Demonstration tool

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Description

The patent or application file contains at least one drawing executed in color. Copies of this patent or patent application publication with color drawing(s) will be provided by the Office upon request and payment of the necessary fee.

FIG. 1 is a perspective view of a demonstration tool showing my new design;

FIG. 2 is a front view of the demonstration tool of FIG. 1;

FIG. 3 is a rear view of the demonstration tool of FIG. 1;

FIG. 4 is a left-side view of the demonstration tool of FIG. 1;

FIG. 5 is a right-side view of the demonstration tool of FIG. 1;

FIG. 6 is a top plan view of the demonstration tool of FIG. 1; and,

FIG. 7 is another perspective view of the demonstration tool of FIG. 1.

Claims

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

Referenced Cited
U.S. Patent Documents
D201017 May 1965 Pohlmann
D322094 December 3, 1991 Holloway
D375764 November 19, 1996 Hollinger
D637646 May 10, 2011 Malen
D642078 July 26, 2011 Balter
D760318 June 28, 2016 Petrocelli
D784449 April 18, 2017 Hebner
D815865 April 24, 2018 Gauggel
D837862 January 8, 2019 Marx
20120162600 June 28, 2012 Pugh
20190086691 March 21, 2019 Lappe
20190110679 April 18, 2019 MacKool
Foreign Patent Documents
3404463 November 2018 EP
Other references
  • Alibaba. Link: https://www.alibaba.com/product-detail/CR39-eyeglass-demo-lens_60543334591.html. Visited May 7, 2019. CR39 eyeglass demo lens. (Year: 2019).
Patent History
Patent number: D859520
Type: Grant
Filed: Mar 14, 2018
Date of Patent: Sep 10, 2019
Assignee: Carl Zeiss Vision International GmbH (Aalen)
Inventor: Seo Ji Ye (Anyangsi)
Primary Examiner: Susan Bennett Hattan
Assistant Examiner: Lauren D McVey
Application Number: 29/640,450
Classifications