Granted Patent
Utility
US 4,399,875 · App. 06/372,159
Automatic support for folding wing frame implement
Inventors:
Wayne J. Schaaf, Bennie J. Boswell
Patented Case
View Patent ↗
Granted: Aug 23, 1983
Filed: Apr 26, 1982
Inventors
Wayne J. Schaaf
Bennie J. Boswell
Assignee (at issue)
Chromalloy American Corp.
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.