Lever system teaching tool

Description

FIG. 1 is top perspective view of a lever system teaching tool showing our new design;

FIG. 2 is a bottom perspective view thereof;

FIG. 3 is a first side elevational view thereof;

FIG. 4 is a second side elevational view thereof;

FIG. 5 is a first end elevational view thereof;

FIG. 6 is a second end elevational view thereof;

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

FIG. 8 is a bottom plan view thereof.

The broken lines in the drawings illustrate portions of the lever system teaching tool that form no part of the claim.

The wire frame lines shown throughout the views depict surface contour.

Claims

CLAIM The ornamental design for a lever system teaching tool, as shown and described.

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Inventors:	Koberstine; Jason Butler (Apple Valley, MN), Harguth; Alison Marie (Owatonna, MN)
Applicant:	Name City State Country Type The Prophet Corporation Owatonna MN US
Assignee:	The Prophet Corporation (Owatonna, MN)
Appl. No.:	D/644,256
Filed:	April 16, 2018

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Current U.S. Class:	D19/64; D21/691
Current International Class:	1907
Field of Search:	;D19/59-64 ;D21/691,686,826

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References Cited [Referenced By]

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U.S. Patent Documents

963030	July 1910	Balch
D173173	October 1954	Rink
D220625	May 1971	Macpherson
D233849	December 1974	Cohen
3944219	March 1976	LoPresti
D318689	July 1991	Watkins
D433060	October 2000	Davies
D566767	April 2008	Urdarevik
7658702	February 2010	Harms
D686287	July 2013	Boatwright
D806188	December 2017	Petek
D844078	March 2019	Salomone
D854102	July 2019	Riekstina-Snore

Foreign Patent Documents

	2873777		Oct 2016		CA
	29713512		Sep 1997		DE

Other References

Stem Supplies. Link: https://www.stem-supplies.com/engineering/simple-and-complex-machines/lea- rninglever-lever-set. Visited Sep. 5, 2019. LearnLever Lever Set. (Year: 2019). cited by examiner . Stem Supplies, Gopher Sport, .COPYRGT. Apr. 2018, pp. 16, 17, and 20-23. cited by applicant.

Primary Examiner: McVey; Lauren D
Attorney, Agent or Firm: Merchant & Gould P.C.

Images