Granted Patent
Utility
US 5,608,028 · App. 08/189,984
Polybutadiene urethane potting material
Inventors:
Henry M. Sanftleben, Ralph D. Hermansen
Patented Case
View Patent ↗
Granted: Mar 4, 1997
Filed: Feb 2, 1994
Inventors
Henry M. Sanftleben
Ralph D. Hermansen
Assignees (at issue)
DELCO ELECTRONICS CORPORATION
Hughes Aircraft Company
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.