| http://www.w3.org/ns/prov#value | - stances or materials such as food and drugsUS2632090 *Apr 21, 1948Mar 17, 1953Gen ElectricHigh-frequency cavity heaterUS2712713 *Feb 23, 1950Jul 12, 1955Herbert JonasMethod of treating seeds by high frequency fieldsUS2939379 *Feb 25, 1959Jun 7, 1960Schmitt Roland GApparatus for popping popcornUS3222491 *Oct 12, 1962Dec 7, 1965Basf AgApparatus for continuous drying of powdery or granular materials
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