Granted Patent
Utility
US 4,798,764 · App. 06/502,262
Arsenate dopant sources and method of making the sources
Inventors:
Richard E. Tressler, Herman J. Boeglin
Patented Case
View Patent ↗
Granted: Jan 17, 1989
Filed: Jun 8, 1983
Inventors
Richard E. Tressler
Herman J. Boeglin
Assignee (at issue)
Stemcor 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.