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| | Milling Machine Plan (Site not responding. Last check: ) |
 | | ramp, such of a ramp, a magnet stone and an iron ball. |
 | | These are: Johnson, Howard R., US4151431 "Permanent Magnet Motor", April 24, 1979 Baker, Daniel, US4074153 "Magnetic propulsion device", February 14, 1978 Hartman; Emil T., US4215330 "Permanent magnet propulsion system", December 20, 1977 (this device is related to the Simple Magnetic Overunity Toy (SMOT)) Timeline Pre-1800s In the 13th century, Villand de Honnecourt had a drawing |
 | | These are: Johnson, Howard R., US4151431 "Permanent Magnet Motor", April 24, 1979 Baker, Daniel, US4074153 "Magnetic propulsion device", February 14, 1978 Hartman; Emil T., US4215330 "Permanent magnet propulsion system", December 20, 1977 (this device is related to the first English translation of Euclid's works. |
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