Extension ladder
The dash-dash broken lines in the drawings depict portions of the extension ladder that form no part of the claimed design. The dot-dash broken lines in
Claims
The ornamental design for an extension ladder as shown and described.
D610709 | February 23, 2010 | Lamb |
D799063 | October 3, 2017 | Yin |
D838385 | January 15, 2019 | Moss |
D966556 | October 11, 2022 | Barker |
D966557 | October 11, 2022 | Maxfield |
D999404 | September 19, 2023 | Maxfield |
D1026251 | May 7, 2024 | Hu |
D1056249 | December 31, 2024 | Li |
20230374858 | November 23, 2023 | Moss |
20230383601 | November 30, 2023 | Maxfield |
Type: Grant
Filed: Jan 14, 2025
Date of Patent: Apr 22, 2025
Inventor: Qiulan Hu (Zhejiang)
Primary Examiner: Gino Colan
Application Number: 29/984,278