Techique for providing back bar and boss for slider

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The Unisys Corporation patent solves the following problem:

Our analysis of this patent is as follows:

Unisys Corporation’s patent US 5327311 A deals with Techique for providing back bar and boss for slider.
Important embodiments include magnetic recording sliders whose record-facing surface characterized by two or three obstacles which stiction forces counter-acted by the provision of a "boss" or a few obstacles, or therebetween; and also characterized by the provision of a "back bar" and had a purge channel; and procedures for granting such are also described.

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