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U.S. Patent number: 4,588,074
Filed: Mar. 21, 1985
Issued: May 13, 1986
Inventor: David W. Strong, et al.
Assignee: Microsoft Corporation
In 1985, a group of people from Microsoft designed a box that would act as both a case and reading surface for books and magazines. The inventors included David Strong, Patricia McGinnis, James Peterson, Vern Raburn, Horothy Hall, David Fleck, and Steven Ballmer.
The patent describes the devices as "a holder for books and similar items that may be used to both store the books and support them in open position at a fixed angle, even if the books are substantially shorter and narrower than the holder."
Image taken from U.S. Patent 4,588,074 - Digitized by Google