G04B 37/125
Allowing note taking
Official title: {allowing note taking (cases with means for holding sheets of note-paper G04B37/127; adjustable guide marks or pointers for indicating determined points of time G04B19/28; changeable indicators G04B45/0092)}
G04B37/125 (Allowing note taking) appears on 1 US grants and 0 published applications in this corpus.
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- 24 Mar 1992
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