Granted Patent
Utility
US 4,417,977 · App. 06/429,096
Removal of PCBS and other halogenated organic compounds from organic fluids
Inventors:
Louis L. Pytlewski, Frank J. Iaconianni, Kenneth Krevitz, Arthur B. Smith
Patented Case
View Patent ↗
Granted: Nov 29, 1983
Filed: Sep 30, 1982
Inventors
Louis L. Pytlewski
Frank J. Iaconianni
Kenneth Krevitz
Arthur B. Smith
Assignee (at issue)
The Franklin Institute
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.