Toy building block
Description
Claims
The ornamental design for a toy building block, as shown and described.
Referenced Cited
U.S. Patent Documents
| D213709 | April 1969 | Gala |
| D233541 | November 1974 | Christiansen |
| D317474 | June 11, 1991 | Olsen |
| 5049104 | September 17, 1991 | Olsen |
| D381051 | July 15, 1997 | Zheng |
| D409679 | May 11, 1999 | Jensen |
| D411864 | July 6, 1999 | Krog |
| D437011 | January 30, 2001 | Chang |
| D437622 | February 13, 2001 | Chang |
| D442647 | May 22, 2001 | Chang |
| D617397 | June 8, 2010 | Thorogood |
Patent History
Patent number: D689956
Type: Grant
Filed: Jan 25, 2012
Date of Patent: Sep 17, 2013
Assignee: Hobbyengine Model Ltd. (Hong Kong)
Inventor: Chi Hang Chan (Kowloon)
Primary Examiner: Cynthia M Chin
Application Number: 29/411,760
Type: Grant
Filed: Jan 25, 2012
Date of Patent: Sep 17, 2013
Assignee: Hobbyengine Model Ltd. (Hong Kong)
Inventor: Chi Hang Chan (Kowloon)
Primary Examiner: Cynthia M Chin
Application Number: 29/411,760
Classifications