Granted Patent
Utility
US 4,022,121 · App. 05/715,360
Adjustment cams for removing end play from tying mechanism on a baler
Inventors:
LeRoy A. Crawford, Irwin D. McIlwain
Patented Case
View Patent ↗
Granted: May 10, 1977
Filed: Aug 18, 1976
Inventors
LeRoy A. Crawford
Irwin D. McIlwain
Assignee (at issue)
Sperry Rand Corporation
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.