Granted Patent
Utility
US 4,554,399 · App. 06/604,352
Particle trap for compressed gas insulated transmission systems
Inventor:
Alan H. Cookson
Patented Case
View Patent ↗
Granted: Nov 19, 1985
Filed: Apr 26, 1984
Inventor
Alan H. Cookson
Assignee (at issue)
United States Department of Energy
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.