Collapsible document stand

Office supplies; artists and teachers materials – Office equipment not elsewhere specified – Holder or file

Design Patent

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Design Patent

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D0521562

CLAIM:
The ornamental design for a collapsible document stand, as shown and described.

REFERENCES:
patent: 1564594 (1925-12-01), Leh
patent: 1797889 (1931-03-01), Wiberg
patent: 2080591 (1937-05-01), Wright
patent: 2165255 (1939-07-01), Hamilton
patent: 2224530 (1940-12-01), Weinstein
patent: 2490356 (1949-12-01), Hummel
patent: 2881008 (1959-04-01), Goldman
patent: 3785605 (1974-01-01), Parekh
patent: D249532 (1978-09-01), Cudahy et al.
patent: D278109 (1985-03-01), Leeds
patent: 6386500 (2002-05-01), Dainoff et al.

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