Granted Patent
Utility
US 4,243,867 · App. 05/919,349
Apparatus for fusibly bonding a coating material to a metal article
Inventors:
Michael L. Earle, Glenn H. Lenzen
Patented Case
View Patent ↗
Granted: Jan 6, 1981
Filed: Jun 26, 1978
Inventors
Michael L. Earle
Glenn H. Lenzen
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.