Granted Patent
Utility
US 4,426,619 · App. 06/269,868
Electrical testing system including plastic window test chamber and method of using same
Inventor:
Erhart E. Demand
Patented Case
View Patent ↗
Granted: Jan 17, 1984
Filed: Jun 3, 1981
Inventor
Erhart E. Demand
Assignee (at issue)
TEMPTRONIC CORPORATION
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.