Granted Patent
Utility
US 6,055,089 · App. 09/257,305
Photovoltaic powering and control system for electrochromic windows
Inventors:
Stephen C. Schulz, Lech Michalski, Hermann VOLLTRAUER, John E. Van Dine
Patented Case
View Patent ↗
Granted: Apr 25, 2000
Filed: Feb 25, 1999
Inventors
Stephen C. Schulz
Lech Michalski
Hermann VOLLTRAUER
John E. Van Dine
Assignee (at issue)
Minnesota Mining and Manufacturing Company
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.