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| Number | Title | Issue Date |
| 7165508 | Hog farrowing system for use in a cold environment and method of use A hog farrowing system for use in a cold environment includes a building providing protection from weather elements. The farrowing boxes have an entrance to permit free ingress and egress of female hogs but restrain the piglets. An alley is provided outside the boxe... | 01/23/2007 |
| 5119467 | Transparent film radiant heat source for use with incubators A radiant heater is provided, which can be in the form of an overlay on an existing incubator hood or integrated in an incubator hood. The heater has an optically transparent, radiotransparent and phototherapy transparent electrically conductive coating, ... | 06/02/1992 |
| 4013873 | Electric heating farrowing pad with means for overhead and side shielding of electric cord An electrical heating farrowing pad of rigid plastic walls is adapted with shielding for either overhead supported outlets or side supported outlets along the floor of the farrowing pen. The shielding includes a tubular elbow fitting having one arm secure... | 03/22/1977 |
