The first commercial microwave oven was nearly 6 feet tall and weighed in at 750 pounds.
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| Number | Title | Issue Date |
| 6192730 | Process for extruding a hollow section or the like from a billet and a device for that purpose A process for extruding a section or the like from a billet, in which a billet is introduced into the bore of a container and, by an extrusion stem, is fed in the direction of extrusion into a shape-forming cross-sectional opening in a die. The billet mat... | 02/27/2001 |
| 4592224 | Process and device for extruding a hollow section A process for extruding a metal billet, in particular a light metal billet in an extrusion container, into the form of a hollow section through a shape-giving orifice in a die having a mandrel which determines the inner contour of the hollow section, and ... | 06/03/1986 |
| 4557131 | Device for indirect extrusion of a hollow section A device for indirect extrusion of a hollow section from a billet, in particular a hollow aluminum billet, which is presented to a shape-giving orifice of a die, which is such that a container can be passed over it, thus enclosing the die, and features in... | 12/10/1985 |