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 a gas-burner signal lantern, instead of an oil-burner signal lantern, that indicates whether or not the track is all clear of trains; includes instructions and illustrations.
Patent for an electrical system, which reduces the amount of power used to run a generator when there is low usage of the generator, thereby saving fuel.
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