Chair frame structure
Description
The surface(s) or portion(s) of the article shown in broken lines in the drawings being for illustrative purpose only and forming no part of the claimed design.
Claims
The ornamental design for a chair frame structure, as shown and described.
Referenced Cited
U.S. Patent Documents
Foreign Patent Documents
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D594669 | June 23, 2009 | Asano |
D600935 | September 29, 2009 | Koh |
D600936 | September 29, 2009 | Koh |
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D687642 | August 13, 2013 | Hsuan-Chin |
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D689297 | September 10, 2013 | Su |
D756140 | May 17, 2016 | Kumazawa |
D758088 | June 7, 2016 | Hurford |
D787216 | May 23, 2017 | Pillet |
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D817019 | May 8, 2018 | Borrelli |
D820072 | June 12, 2018 | Choi |
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WO-2007109699 | September 2007 | WO |
Patent History
Classifications
Current U.S. Class:
D6/708.16