Step tread frame
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Description
The broken lines in
Claims
The ornamental design for a step tread frame, as shown and described.
Referenced Cited
Patent History
Patent number: D921927
Type: Grant
Filed: Dec 5, 2019
Date of Patent: Jun 8, 2021
Assignee: Lippert Components, Inc. (Elkhart, IN)
Inventors: Nathaniel Fuller (Granger, IN), Scott C. McKinnon (Union City, MI)
Primary Examiner: Gino Colan
Application Number: 29/715,862
Type: Grant
Filed: Dec 5, 2019
Date of Patent: Jun 8, 2021
Assignee: Lippert Components, Inc. (Elkhart, IN)
Inventors: Nathaniel Fuller (Granger, IN), Scott C. McKinnon (Union City, MI)
Primary Examiner: Gino Colan
Application Number: 29/715,862
Classifications
Current U.S. Class:
Stair Tread, Step Or Ladder Rung (D25/69)