Granted Patent
Utility
US 4,990,231 · App. 07/476,105
Corrosion protection system
Inventors:
Ray F. Stewart, Michael Masia, Albert B. Macknick
Patented Case
View Patent ↗
Granted: Feb 5, 1991
Filed: Jan 26, 1990
Inventors
Ray F. Stewart
Michael Masia
Albert B. Macknick
Assignee (at issue)
Raychem Limited
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.