Granted Patent
Utility
US 6,608,560 · App. 09/874,652
Device and method for providing HVAC service assistance
Inventor:
James D. Abrams
Patented Case
View Patent ↗
Granted: Aug 19, 2003
Filed: Jun 5, 2001
Inventor
James D. Abrams
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.