Computer read-out book stand

作者: Jr. Kermit H. Kemmerer

DOI:

关键词:

摘要: A computer read-out book stand is disclosed. The has a rectangular base with support adjustably attached at the base's midpoint. angularly elevated by set of elevators graduated heights. retaining means on support's distal end connects selected elevator to support. L-shaped posts fastened support, and parallel its sides, receive slotted ends spine holders so that remains in place, resting desired angle.

参考文章(3)
Hipolito S. Manso, Book holding device ,(1977)
S Surette, Book holder and book stand ,(1973)
Thomas E Redick, Telephone directory mounting ,(1968)