Demonstration tool

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Description

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

FIG. 2 is a rear perspective view thereof;

FIG. 3 is a front elevation view thereof;

FIG. 4 is a rear elevation view thereof;

FIG. 5 is a right-side elevation view thereof;

FIG. 6 is a left-side elevation view thereof;

FIG. 7 is a top plan view thereof; and,

FIG. 8 is a bottom plan view thereof.

Claims

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

Referenced Cited
U.S. Patent Documents
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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
D843457 March 19, 2019 Kott
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20190086691 March 21, 2019 Lappe
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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: D858631
Type: Grant
Filed: Sep 27, 2018
Date of Patent: Sep 3, 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: 29/664,726