Permanent magnet propulsion system
US Pat. 4215330 - Filed Dec 20, 1977 - Ethel Hartman, Charles Helin, Estate of
... United States Patent [i9] [ii] 4215330 Jul. 29, Hartman [45] Magnetic propulsion system
US Pat. 5402021 - Filed May 24, 1993
... and cle's armature to be accelerated faster than would oth- US Pat. No.
4215330 to ... Robot assembly
US Pat. 5678980 - Filed Jun 16, 1995 - Applied Materials, Inc.
4215330 7/ Hartman . ... Permanent magnet motor
US Pat. 6867514 - Filed Sep 7, 2004
... A 4215330 A ... Two-axis magnetically coupled robot
US Pat. 5583408 - Filed Jul 20, 1994 - Applied Materials
4215330 7/ Hartman . ... Magnetic force generating method and apparatus
US Pat. 4877983 - Filed Nov 19, 1985
FIG- ? » a ** P Jf view^fan installation in accor- U^S. Pat. Nos. 4451,431 and
4215330 to Johnson and dance with yet another embodiment. ... Apparatus, systems and methods for levitating and moving objects
US Pat. 7204192 - Filed Apr 22, 2003 - Magna Force, Inc.
... A 4215330 A ... Rugged explosion-proof actuator with integral electronics
US Pat. 6392322 - Filed Jan 31, 2000 - Precision Engine Controls Corporation
48 4215330 A * 7/ Hartman . ... Dual coaxial magnetic couplers for vacuum chamber robot assembly
US Pat. 5539266 - Filed Oct 17, 1995 - Applied Materials Inc.
... 4215330 7/ ... Apparatus and process for generating energy
US Pat. 6954019 - Filed Nov 6, 2002 - M International, LLC
... A 2/ 4215330 A 7/ ...  Stay up to date on these results using the patents RSS feed on 4215330.
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