Granted Patent
Utility
US 4,808,068 · App. 06/924,215
Blower unloading device
Inventors:
Norman H. Asbjornson, James V. Foty
Patented Case
View Patent ↗
Granted: Feb 28, 1989
Filed: Oct 28, 1986
Inventors
Norman H. Asbjornson
James V. Foty
Assignee (at issue)
Intertherm Investments, Inc.
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.