Patent for a music indicator, which shows sheet music notations and the name of the note and major and minor chords on a device, which is placed over the keyboard of a piano to show where the different notes are for use in teaching music.
Patent for providing a "door-hinge of simple and durable construction swinging freely either way from a spring which is fast at one end, but adapted at the other to ride freely up and down the doorjamb" (lines 9-12) including an illustration.
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