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| Number | Title | Issue Date |
| 6292078 | Manually controlled magnetic anchoring device A manual magnetic anchoring device includes a monolithic ferromagnetic block, whereon a housing for stator magnets, a housing for a rotor core, a ferromagnetic crown for short circuiting of the magnetic flux during deactivation of the anchoring device, an... | 09/18/2001 |
| 4956625 | Magnetic gripping apparatus having circuit for eliminating residual flux A magnetic gripping apparatus, of the permanent magnet type, comprising a base plate and peripheral walls, at least a first and a second pole units, each pole unit comprising a main pole piece having an outer face defining a gripping surface, main permane... | 09/11/1990 |
