B - Operations – Transporting – 42 – D
Patent
B - Operations, Transporting
42
D
281/2
B42D 3/16 (2006.01) B42D 9/00 (2006.01)
Patent
CA 1144205
ABSTRACT It is common knowledge that most books while being read tend to close by themselves if (A) they are not kept open by hand, or (B) some sort of weight is not used to keep them open or (C) some special device is not used. This invention relieves the reader of having to use either of the first two methods. It relates to a new device for keeping a book open.
386514
Knopke Fred
Purewal Pal S.
Knopke Fred
Purewal Pal S.
LandOfFree
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