Backrest for a chair

Design Patent

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Design Patent

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D0477939

CLAIM:
The ornamental design for a backrest for a chair, as shown and described.

REFERENCES:
patent: 2207338 (1940-07-01), Clarin
patent: 2666478 (1954-01-01), Shwayder
patent: 2865437 (1958-12-01), Shwayder
patent: 3021175 (1962-02-01), Norquist
patent: 3094357 (1963-06-01), Shwayder
patent: 3466084 (1969-09-01), Moore et al.
patent: 5524966 (1996-06-01), Piretti
patent: 6131992 (2000-10-01), Chang
patent: 6345863 (2002-02-01), Laws et al.
patent: D465665 (2002-11-01), Ritchie et al.
patent: D465940 (2002-11-01), Nien

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