Granted Patent
Utility
US 4,448,530 · App. 06/237,308
Spectrophotometer
Inventors:
Albert Schmitt, deceased, by Magdalena S. Schmitt, heir, by Thomas Schmitt, heir, by Martin Schmitt, heir, by Georg Schmitt, heir, by Annette Schmitt, heir, Ernst Spreitzhofer
Patented Case
View Patent ↗
Granted: May 15, 1984
Filed: Feb 23, 1981
Inventors
Albert Schmitt, deceased
by Magdalena S. Schmitt, heir
by Thomas Schmitt, heir
by Martin Schmitt, heir
by Georg Schmitt, heir
by Annette Schmitt, heir
Ernst Spreitzhofer
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.