Granted Patent
Utility
US 4,047,547 · App. 05/668,950
Method of filling, sampling and sealing an aseptic tank
Inventors:
Steve A. Rechtsteiner, Philip E. Nelson, John R. Heron
Patented Case
View Patent ↗
Granted: Sep 13, 1977
Filed: Mar 22, 1976
Inventors
Steve A. Rechtsteiner
Philip E. Nelson
John R. Heron
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.