Granted Patent
Utility
US 5,064,522 · App. 07/431,871
Feed through for application of HF energy
Inventor:
Klaus Wellerdieck
Patented Case
View Patent ↗
Granted: Nov 12, 1991
Filed: Nov 6, 1989
Inventor
Klaus Wellerdieck
Assignee (at issue)
Balzers Aktiengesellschaft
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.