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Showing posts with label Memoirs of an Inventor and Scientist: Sketches of Original Ingenious Ideas Published n a Series of Pamphlets. No. VL: J.G. Konvalinka's Cosmic Electro-Motor. Show all posts
Showing posts with label Memoirs of an Inventor and Scientist: Sketches of Original Ingenious Ideas Published n a Series of Pamphlets. No. VL: J.G. Konvalinka's Cosmic Electro-Motor. Show all posts