Teaching tool for chemical elements
Description
Claims
The ornamental design for a teaching tool for chemical elements, as shown and described.
Referenced Cited
U.S. Patent Documents
3208754 | September 1965 | Sieve |
D209297 | November 1967 | Randolph et al. |
3959893 | June 1, 1976 | Sigg |
D246004 | October 4, 1977 | Goff |
4055348 | October 25, 1977 | Marzoni, Jr. |
4474376 | October 2, 1984 | Gustafson |
4497487 | February 5, 1985 | Crippen |
4529201 | July 16, 1985 | Nadel |
4575088 | March 11, 1986 | Peek |
D283632 | April 29, 1986 | Moore |
4735419 | April 5, 1988 | Koca |
5224708 | July 6, 1993 | Gathman et al. |
5909874 | June 8, 1999 | Daniel et al. |
D412386 | July 27, 1999 | De Manjarrez et al. |
5918881 | July 6, 1999 | Kirby |
5937553 | August 17, 1999 | Maran |
5947741 | September 7, 1999 | Villarreal |
6123333 | September 26, 2000 | McGinnis et al. |
D457833 | May 28, 2002 | Juan et al. |
6422558 | July 23, 2002 | Chambers |
D517612 | March 21, 2006 | Bowling |
D522240 | June 6, 2006 | Laval et al. |
7095033 | August 22, 2006 | Sorge |
D551591 | September 25, 2007 | Wesorick |
7434808 | October 14, 2008 | Sorge |
7546702 | June 16, 2009 | Malkovas |
7819402 | October 26, 2010 | Witz |
D629046 | December 14, 2010 | Bowling |
D632027 | February 1, 2011 | Johnston et al. |
D634370 | March 15, 2011 | Gebhart |
Patent History
Patent number: D653290
Type: Grant
Filed: Mar 25, 2011
Date of Patent: Jan 31, 2012
Inventors: Chong-Soo Han (Gwangju), Sunah Kim (Gwangju)
Primary Examiner: T. Chase Nelson
Assistant Examiner: Mark Cavanna
Attorney: Cantor Colburn LLP
Application Number: 29/388,215
Type: Grant
Filed: Mar 25, 2011
Date of Patent: Jan 31, 2012
Inventors: Chong-Soo Han (Gwangju), Sunah Kim (Gwangju)
Primary Examiner: T. Chase Nelson
Assistant Examiner: Mark Cavanna
Attorney: Cantor Colburn LLP
Application Number: 29/388,215
Classifications