Granted Patent
Utility
US 6,117,218 · App. 09/234,739
Scenting device for HVAC systems
Inventors:
Michael Snyder, Gary A. Robinson
Patented Case
View Patent ↗
Granted: Sep 12, 2000
Filed: Jan 21, 1999
Inventors
Michael Snyder
Gary A. Robinson
Assignee (at issue)
WEB PRODUCTS, LLC
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.