Granted Patent
Utility
US 4,252,083 · App. 06/035,736
Livestock feeder system with water level control
Inventors:
Carl V. Gilst, Ingmar Kallin
Patented Case
View Patent ↗
Granted: Feb 24, 1981
Filed: May 3, 1979
Inventors
Carl V. Gilst
Ingmar Kallin
Assignee (at issue)
Chore-Time Equipment, Inc.
This patent predates the USPTO's electronic file wrapper — prosecution documents from this era exist only in the Patent Office's paper records. A certified copy of the file history can be ordered from the USPTO's paper archives.