Granted Patent
Utility
US 4,672,818 · App. 06/904,415
Three-member plastic rooftop air conditioner housing
Inventor:
James Edward Roth
Patented Case
View Patent ↗
Granted: Jun 16, 1987
Filed: Sep 8, 1986
Inventor
James Edward Roth
Assignee (at issue)
Intertherm 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.