Granted Patent
Utility
US 4,640,229 · App. 06/706,492
Apparatus for feeding livestock
Inventors:
Ray E. Swartzendruber, Keith Coffman
Patented Case
View Patent ↗
Granted: Feb 3, 1987
Filed: Feb 28, 1985
Inventors
Ray E. Swartzendruber
Keith Coffman
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.