Granted Patent
Utility
US 4,351,801 · App. 06/263,582
Combustion apparatus for use in elementary analysis
Inventor:
Rolf Bartke
Patented Case
View Patent ↗
Granted: Sep 28, 1982
Filed: May 14, 1981
Inventor
Rolf Bartke
Assignee (at issue)
Antek Instruments, LP
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.