Granted Patent
Utility
US 5,120,371 · App. 07/620,500
Process of cleaning soldering flux and/or adhesive tape with terpenet and monobasic ester
Inventors:
Paul L. Bolden, Jr., Michael E. Hayes
Patented Case
View Patent ↗
Granted: Jun 9, 1992
Filed: Nov 29, 1990
Inventors
Paul L. Bolden, Jr.
Michael E. Hayes
Assignee (at issue)
Petroferm, 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.