Granted Patent
Utility
US 4,499,649 · App. 06/407,293
All lead sensor
Inventor:
Richard B. Maxner
Patented Case
View Patent ↗
Granted: Feb 19, 1985
Filed: Aug 11, 1982
Inventor
Richard B. Maxner
Assignee (at issue)
USM Holding AG
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.