(under subclass 899) Process wherein the spheroid element comprises an outer member enclosing an empty portion thereof.
SEE OR SEARCH THIS CLASS, SUBCLASS:
463, for process of mechanical manufacture including peripheral joining of opposed mirror image parts to form hollow bodies.
D20, Process and apparatus for double blank.
SEE OR SEARCH CLASS
228, Metal Fusion Bonding,
173.6, for bonding by deforming sheet metal. CROSS-REFERENCE ART COLLECTIONS
The documents in the following collections have been placed without regard to their original classification or to their claimed subject matter and are therefore not exhaustive of the art subject matter but are only examples of the art. Consequently, a complete search for an art subject matter provided here would require a review of the higher portions of this classification schedule.
