Granted Patent
Utility
US 6,769,482 · App. 09/983,651
System and method for switching-over between heating and cooling modes
Inventors:
Phillip Ryan Wagner, John Gilman Chapman, Jr.
Patented Case
View Patent ↗
Granted: Aug 3, 2004
Filed: Oct 25, 2001
Inventors
Phillip Ryan Wagner
John Gilman Chapman, Jr.
Assignee (at issue)
Ranco Incorporated of Delaware
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.