comprising passivating the surface with an aqueous solution to inhibit the formation of whiskers, wherein the solution comprises l-50 g/L sodium dichromate, and 140% phosphoric acid, applying an aqueous rinse solution having a pH greater than 8 after passivation, and thereafter electroplating in a methane sulfonate solder bath to form a coating of solder, which is substantially whisker free.

Device for Removing Paint U.S. Patent 5327,869. June 21, 1994 R. Kaempf, assignor to Ceufsche Luffhansa AG, Germany

A device for removing paint from painted surfaces by utilizing high-energy jets.

Internal Abrading Tool U.S. Parent 5321,919. June 21, 1994 A.F. Scheider and R.B. Warner, assignors fo Jason Inc., C/eve/and

An internal abrading tool comprising an axial stem, said stem being in the form of a slender shaft, abrasive containing plastic filaments projecting radially of the shaft,

and bent through an arc having an angular component axially of the shaft,wherebi the filaments extend in a direction generally axially of the shaft.

Automatic Brush Plating Machine U.S. Patent 5,324,406. June 28, 1994 EM. Anderson et al., ass&nots fo Tosoh SMD Inc., Grove Cify, Ohio

An electrodeposition apparatus for de- positing one or more of a plurality of working solutions on a substrate.

Electrodeposition of a Dense, Reflective Tin or Tin-Lead Alloy U.S. Pafenf 5,326,453. July 5, 1994 D. Irz! Endicoff et al, assignors to Moforola Inc., Schaumburg, 111. and Technic Inc., Cranson, RI.

A solution for electrodepositing a tin or tin-lead alloy on a cathode, comprising an alkane or alkanol sulfonic acid and a tin alkane or alkanol sulfonate or a mixture of a tin and lead alkane or alkanol sulfonate; a modified additive comprised of at least one nonionic surfactant, wherein an additive is electrolyzed prior to electrodepositing a tin

or tin-lead alloy on a cathode to form the modified additive; and an aliphatic dialde- hyde.

Antireflective Surface Coating U.S. Pafenf 5,326,454. Jufy 5, 1994 DE. Engefhaupf, assignor fo Martin Marietta Corp., Bethesda, Md.

A method for application of a high specific area, antireflective surface to a substrate, comprising electrodepositing by a bipolar pulse plating method, which encompasses alternate plating and etching, a surface layer of metal exhibiting a dendritic crystal structure, and contacting with an oxidizing solution to form an oxide layer to form the antireflective surface.

Purge System for Automotive Powder Coating U.S. Patent 5,326,599. July 5, 1994 J. I?. Shufik, assignor to No&on Corp., W&fake, Ohio

A ‘method of powder spraying a work- piece having an exterior, a priir of side openings one on each side of the exterior, an additional opening on the exterior, and a

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