Granted Patent
Utility
US 6,221,464 · App. 09/392,087
Flanged insulation assembly and method of making
Inventors:
Bharat Patel, Steven G. Schmitt, Michael T. Heffelfinger, Rebecca L. Thomas-Dutiel, Weigang Qi
Patented Case
View Patent ↗
Granted: Apr 24, 2001
Filed: Sep 8, 1999
Inventors
Bharat Patel
Steven G. Schmitt
Michael T. Heffelfinger
Rebecca L. Thomas-Dutiel
Weigang Qi
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.