Granted Patent
Utility
US 4,366,927 · App. 06/084,694
Method of making a loose-fill insulation
Inventor:
William H. Kielmeyer
Patented Case
View Patent ↗
Granted: Jan 4, 1983
Filed: Oct 15, 1979
Inventor
William H. Kielmeyer
Assignee (at issue)
Manville Service Corporation
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.