Granted Patent
Utility
US 6,584,749 · App. 09/785,924
Insulating a building using insulating particles with foam and a web
Inventor:
Henry Sperber
Patented Case
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Granted: Jul 1, 2003
Filed: Feb 16, 2001
Inventor
Henry Sperber
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.