Granted Patent
Utility
US 4,370,840 · App. 06/188,802
Insulation anchor
Inventors:
Charles B. Bisbee, Richard J. Yost
Patented Case
View Patent ↗
Granted: Feb 1, 1983
Filed: Sep 19, 1980
Inventors
Charles B. Bisbee
Richard J. Yost
Assignee (at issue)
Combustion Engineering, 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.