CHASE, Circuit Judge.
The patent in suit, owned by the plaintiff, contains claims reading upon a combination of a stencil and a machine in which to use it. The stencil is composed of a comparatively heavy frame around an opening or window, across which is placed paper of such composition that it is impervious to ink except when cut or broken. Its characteristics are such that blank stencils are readily printed upon in a typewriter and may thereafter be used to reproduce...
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