Granted Patent
Utility
US 4,475,585 · App. 06/272,447
Air conditioning and heat pump cabinets with removable coil guards
Inventor:
Russell W. Hoeffken
Patented Case
View Patent ↗
Granted: Oct 9, 1984
Filed: Jun 11, 1981
Inventor
Russell W. Hoeffken
Assignee (at issue)
Snyder General 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.