Ladder
Description
Claims
The ornamental design for a ladder, as shown and described.
Referenced Cited
U.S. Patent Documents
D434855 | December 5, 2000 | Ullum |
D447817 | September 11, 2001 | Rosko |
D455842 | April 16, 2002 | Rosko |
D564674 | March 18, 2008 | Farber |
D564675 | March 18, 2008 | Farber |
D564676 | March 18, 2008 | Farber |
D594135 | June 9, 2009 | Jane Stopp |
D620132 | July 20, 2010 | Han |
D766461 | September 13, 2016 | Moss et al. |
D781449 | March 14, 2017 | Green |
D796694 | September 5, 2017 | Green |
Patent History
Patent number: D912277
Type: Grant
Filed: Aug 6, 2020
Date of Patent: Mar 2, 2021
Inventor: Shuqin Feng (Suzhou)
Primary Examiner: Gino Colan
Application Number: 29/745,441
Type: Grant
Filed: Aug 6, 2020
Date of Patent: Mar 2, 2021
Inventor: Shuqin Feng (Suzhou)
Primary Examiner: Gino Colan
Application Number: 29/745,441
Classifications
Current U.S. Class:
Step Stool Type (D25/65)