Granted Patent
Utility
US 6,699,120 · App. 10/257,836
Method and system for controlling ventilation
Inventor:
Jesper Darum
Patented Case
View Patent ↗
Granted: Mar 2, 2004
Filed: Oct 18, 2002
Inventor
Jesper Darum
Assignee (at issue)
VKR Holding A/S
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.