Patent
   D398549
Priority
Aug 11 1997
Filed
Aug 11 1997
Issued
Sep 22 1998
Expiry
Sep 22 2012
Assg.orig
Entity
unknown
1
7
n/a
The ornamental design for a four-pan algebra balance, as shown.

FIG. 1 is a front view of a four-pan algebra balance showing my new design;

FIG. 2 is a right side view thereof;

FIG. 3 is a back view thereof;

FIG. 4 is a left side view thereof;

FIG. 5 is a top view thereof; and,

FIG. 6 is a bottom view thereof.

Kung, George, Vicchiollo, Ken

Patent Priority Assignee Title
D611375, Sep 11 2009 Youth Toy Enterprise Co., Ltd. Balance for teaching
Patent Priority Assignee Title
3000114,
3721019,
3742619,
4713009, Jun 11 1986 Teaching apparatus and method for solving algebraic linear equations
5425643, Jun 28 1991 Mechanical, analog type, teaching aid computer
784145,
155162,
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Executed onAssignorAssigneeConveyanceFrameReelDoc
Jul 31 1997KUNG, GEORGECUISENAIARE COMPANY OF AMERICA, INC ASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS 0086700257 pdf
Aug 07 1997VICCHIOLLO, KENCUISENAIARE COMPANY OF AMERICA, INC ASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS 0086700257 pdf
Aug 11 1997Cuisenaire Company of America, Inc.(assignment on the face of the patent)
Apr 07 2000CUISENAIRE COMPANY OF AMERICA, INC A DAIGGER & COMPANY, INC ASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS 0108320470 pdf
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