Granted Patent
Utility
US 4,364,756 · App. 06/281,213
Refrigerant suction line filter/filter-drier and method for the construction thereof
Inventors:
John-Paul Clarke, Ernest W. Schumacher
Patented Case
View Patent ↗
Granted: Dec 21, 1982
Filed: Jul 7, 1981
Inventors
John-Paul Clarke
Ernest W. Schumacher
Assignee (at issue)
Virginia Chemicals 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.