Granted Patent
Utility
US 5,392,578 · App. 08/025,381
Insulative wall cladding having insulation boards fitting together to form channels and fire-retardant panels disposed therein
Inventors:
Richard E. Kroll, Vincent Tamburrini, Frederick M. Hansen
Patented Case
View Patent ↗
Granted: Feb 28, 1995
Filed: Mar 2, 1993
Inventors
Richard E. Kroll
Vincent Tamburrini
Frederick M. Hansen
Assignee (at issue)
Dryvit Systems Canada Ltd.
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.