Granted Patent
Utility
US 5,175,987 · App. 07/789,033
Hay harvesting machine
Inventors:
Kenneth R. Underhill, Jacob M. Fisher
Patented Case
View Patent ↗
Granted: Jan 5, 1993
Filed: Nov 7, 1991
Inventors
Kenneth R. Underhill
Jacob M. Fisher
Assignee (at issue)
Pequea Machine, 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.