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Class Information
Number: 119/505
Name: Animal husbandry > Confining or housing > Pen or rack > Hog farrowing pen > With automatic farrowing device
Description: Subject matter including a self-regulating means utilized in the farrowing function.

Patents under this class:

Patent Number Title Of Patent Date Issued
7178484 Apparatus for raising a sow in a farrowing crate Feb. 20, 2007
6823819 Apparatus for raising a sow in a farrowing crate Nov. 30, 2004
6382135 Pig pen May. 7, 2002
5921205 Sow farrowing station Jul. 13, 1999
5372091 Farrowing pig pen Dec. 13, 1994
5233940 Piglet protection apparatus Aug. 10, 1993
5111769 Farrowing crates May. 12, 1992
5074248 Pig farrowing and weaning apparatus Dec. 24, 1991
4793287 Farrowing station with an electronic control Dec. 27, 1988
4651677 Apparatus for preventing shoats from being crushed to death in hog breeding operations and the use thereof as a device for indicating the start of the dam's birthing procedure Mar. 24, 1987
4528943 Farrowing crates Jul. 16, 1985
4428324 Method and apparatus for preventing piglets from suffocating under the dam in a brooding pen Jan. 31, 1984
4351272 Anti-crushing bar assembly for pig farrowing crates Sep. 28, 1982
4145993 Piglet saver Mar. 27, 1979

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