Assisting device for opening door knobs and handles
Description
The stippled shading shown in the figures represents texture. The broken lines shown in the figures represent portions of the assisting device for opening door knobs and handles that form no part of the claimed design.
Claims
The ornamental design for an assisting device for opening door knobs and handles, as shown and described.
Referenced Cited
U.S. Patent Documents
Foreign Patent Documents
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- Jenson, Kris; “University of Sunderland experts have designed and produced Coronavirus 3D printer door openers to help people avoid touching handles”, https://www.itv.com/news/tyne-tees/2020-04-02/university-of-sunderland-experts-design-coronavirus-3d-printer-door-openers/, printed Apr. 2, 2020.
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Patent History
Patent number: D1049818
Type: Grant
Filed: Jan 14, 2022
Date of Patent: Nov 5, 2024
Inventor: Julia Brufke Wenger (Phoenixville, PA)
Primary Examiner: Lauren R Calve
Application Number: 29/823,112
Type: Grant
Filed: Jan 14, 2022
Date of Patent: Nov 5, 2024
Inventor: Julia Brufke Wenger (Phoenixville, PA)
Primary Examiner: Lauren R Calve
Application Number: 29/823,112
Classifications
Current U.S. Class:
D8/308