Granted Patent
Utility
US 5,439,632 · App. 08/014,187
Process for pretreatment of non-isotropic cylindrical products
Inventors:
David C. Leach, John M. Barnes, Jr.
Patented Case
View Patent ↗
Granted: Aug 8, 1995
Filed: Feb 5, 1993
Inventors
David C. Leach
John M. Barnes, Jr.
Assignee (at issue)
ICI Composites 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.