Granted Patent
Utility
US 4,968,141 · App. 07/304,993
Electrothermal atomization furnace
Inventors:
Rolf Tamm, Gunther Rodel
Patented Case
View Patent ↗
Granted: Nov 6, 1990
Filed: Feb 1, 1989
Inventors
Rolf Tamm
Gunther Rodel
Assignee (at issue)
PerkinElmer, Inc.
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.