Engine maintenance ladder
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Description
Claims
The ornamental design for the engine maintenance ladder, as shown and described.
Referenced Cited
U.S. Patent Documents
8002084 | August 23, 2011 | Huang |
D722182 | February 3, 2015 | Green |
D745191 | December 8, 2015 | Green |
D796694 | September 5, 2017 | Green |
D836215 | December 18, 2018 | Green |
D840055 | February 5, 2019 | Skubic |
20150308190 | October 29, 2015 | Skubic |
20150354276 | December 10, 2015 | Green |
Patent History
Patent number: D884923
Type: Grant
Filed: Sep 25, 2018
Date of Patent: May 19, 2020
Assignee: LOCK N CLIMB, LLC (Independence, KS)
Inventor: Jeffrey Alan Green (Independence, KS)
Primary Examiner: Gino Colan
Application Number: 29/664,427
Type: Grant
Filed: Sep 25, 2018
Date of Patent: May 19, 2020
Assignee: LOCK N CLIMB, LLC (Independence, KS)
Inventor: Jeffrey Alan Green (Independence, KS)
Primary Examiner: Gino Colan
Application Number: 29/664,427
Classifications
Current U.S. Class:
Ladder (D25/64)