Aid for teaching projection drawing
The broken lines shown in the figures are for the purpose of illustrating the environment related to the claimed design and forms no part of the claimed design as to those figures.
Claims
The ornamental design for aid for teaching projection drawing, as shown and described.
D254793 | April 22, 1980 | Morey |
D259866 | July 14, 1981 | Mortillaro |
D286651 | November 11, 1986 | Morey |
D292932 | November 24, 1987 | McGinley |
D297437 | August 30, 1988 | Mortensen |
D346136 | April 19, 1994 | Dollery |
D377218 | January 7, 1997 | Cohen |
D412890 | August 17, 1999 | Nesenoff |
D480425 | October 7, 2003 | Suchta |
D512338 | December 6, 2005 | Hannon |
D528162 | September 12, 2006 | Lucas |
D531672 | November 7, 2006 | Hannon |
D566767 | April 15, 2008 | Urdarevik |
Type: Grant
Filed: Apr 10, 2008
Date of Patent: Apr 7, 2009
Inventor: Slobodan Urdarevik (Windsor Ontario)
Primary Examiner: Robert A. Delehanty
Assistant Examiner: Mark Cavanna
Application Number: 29/306,531