Ladder step board
Description
The evenly dashed broken lines illustrate portion of the ladder step and its boards that form no part of the claimed design.
Claims
The ornamental design for a ladder step board, as shown and described.
Referenced Cited
U.S. Patent Documents
| D262076 | December 1, 1981 | Pracon |
| D294542 | March 8, 1988 | Hill |
| 5072343 | December 10, 1991 | Buers |
| D401084 | November 17, 1998 | Martin |
| D458473 | June 11, 2002 | Steffensen |
| D478745 | August 26, 2003 | Sparkowski |
| D930408 | September 14, 2021 | Dresnick |
| D986654 | May 23, 2023 | Chen |
| D1047243 | October 15, 2024 | Huang |
| D1049696 | November 5, 2024 | Yang |
| D1056578 | January 7, 2025 | Li |
| D1062014 | February 11, 2025 | Zhang |
| D1063143 | February 18, 2025 | Mai |
| D1065889 | March 11, 2025 | Xiao |
| D1081212 | July 1, 2025 | Hu |
| D1084698 | July 22, 2025 | Hunter |
| D1091200 | September 2, 2025 | Chen |
| D1101464 | November 11, 2025 | Feng |
Patent History
Patent number: D1148429
Type: Grant
Filed: Dec 5, 2024
Date of Patent: Sep 22, 2026
Assignee: Guangzhou Kaitu Environmental Protection Technology Co., Ltd. (Guangzhou)
Inventor: Kai Luo (Guangzhou)
Primary Examiner: Kelley A Donnelly
Application Number: 29/977,139
Type: Grant
Filed: Dec 5, 2024
Date of Patent: Sep 22, 2026
Assignee: Guangzhou Kaitu Environmental Protection Technology Co., Ltd. (Guangzhou)
Inventor: Kai Luo (Guangzhou)
Primary Examiner: Kelley A Donnelly
Application Number: 29/977,139
Classifications
Current U.S. Class:
D6/675.1