Granted Patent
Utility
US 4,211,205 · App. 05/955,083
Laminated spacer plate for engines and method for making the same
Inventor:
David A. Lockhart
Patented Case
View Patent ↗
Granted: Jul 8, 1980
Filed: Oct 26, 1978
Inventor
David A. Lockhart
Assignee (at issue)
Caterpillar Tractor Co.
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.