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The ornamental design for a demonstration device, as shown and described. |
FIG. 1 is a top, front and right side perspective view of a demonstration device showing my new design;
FIG. 2 is a top plan view thereof;
FIG. 3 is a front elevational view thereof;
FIG. 4 is a bottom plan view thereof;
FIG. 5 is a rear elevational view thereof;
FIG. 6 is a right side elevational view thereof; and
FIG. 7 is an exploded top, front and right side perspective view thereof.
Patent | Priority | Assignee | Title |
11355028, | Feb 08 2020 | ACOUSTIC WALLS, LLC | Systems and methods for aiding music theory comprehension |
5318448, | Jan 06 1992 | Ellman International, Inc | Demonstration model for gynecological procedure |
6517354, | Nov 17 2000 | Medical simulation apparatus and related method | |
7988451, | Jul 31 2007 | Pocket Nurse Enterprises, Inc. | Injection training pad |
D323674, | Feb 07 1989 | MARIOL, JAMES F , 481 DEANVIEW DRIVE, CINCINNATI, OH 45224 | Combined flashlight and insect viewing container |
D549286, | Jun 27 2006 | ESSILOR INTERNATIONAL COMPAGNIE GENERALE D OPTIQUE | Demonstrator of optical phenomena in a case |
D566767, | Sep 14 2005 | Teacher's aid | |
D590019, | Sep 14 2005 | Aid for teaching projection drawing | |
D621873, | Jul 09 2009 | Science Centre Board | Fire tornado lamp |
D622318, | Nov 05 2009 | Science Centre Board | Fire tornado device |
D659257, | Nov 10 2010 | MERCHSOURCE, LLC A DELAWARE LIMITED LIABILITY COMPANY | Vortex simulator |
D903772, | Jan 18 2019 | Magnetic suspension toy | |
D904514, | Jan 14 2019 | ACOUSTIC WALLS, LLC | Rotary device |
Patent | Priority | Assignee | Title |
3579858, | |||
3775865, | |||
4058910, | Nov 18 1976 | University of Iowa Research Foundation | Apparatus for teaching the structures and projection of arterial systems |
216364, |
Executed on | Assignor | Assignee | Conveyance | Frame | Reel | Doc |
Nov 02 1984 | MC GINLEY, JOSEPH A | CODMAN & SHURTLEFF INC A CORP OF MA | ASSIGNMENT OF ASSIGNORS INTEREST | 004335 | /0255 | |
Nov 13 1984 | Codman & Shurtleff Inc. | (assignment on the face of the patent) | / | |||
Dec 16 1993 | Codman & Shurtleff, Inc | Johnson & Johnson Professional, Inc | CERTIFIED COPY OF MERGER ATTACHED 6 PP LAST PAGE DOUBLE-SIDED WITH EFFECT FROM JANUARY 1, 1994 | 007709 | /0871 |
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