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Directory:Magnetic Motors:HJ:Patents

[KEY] U.S. patent number 4,151,431 (http://164.195.100.11/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PALL&p=1&u=/netahtml/srchnum.htm&r=1&f=G&l=50&s1=%274151431%27.WKU.&OS=PN/4151431&RS=PN/4151431) "Permanent magnet motor" (April 24, 1979)
U.S. patent number 4,877,983 (http://patft.uspto.gov/netacgi/nph-Parser?Sect1=PTO2&Sect2=HITOFF&p=1&u=/netahtml/search-bool.html&r=6&f=G&l=50&co1=AND&d=ptxt&s1=4,877,983&OS=4,877,983&RS=4,877,983) "Magnetic force generating method and apparatus" (Oct. 31, 1989)
U.S. patent number 5,402,021 (http://164.195.100.11/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PALL&p=1&u=/netahtml/srchnum.htm&r=1&f=G&l=50&s1=%275402021%27.WKU.&OS=PN/5402021&RS=PN/5402021) "Magnetic propulsion system" (March 28, 1995)

See also