Granted Patent
Utility
US 5,040,574 · App. 07/527,881
Can filling apparatus having an improved gas venting mechanism
Inventors:
Ulrich H. Petri, Friedrich Rademacher, Siegmar Sindermann
Patented Case
View Patent ↗
Granted: Aug 20, 1991
Filed: May 24, 1990
Inventors
Ulrich H. Petri
Friedrich Rademacher
Siegmar Sindermann
Assignee (at issue)
HK HOLDINGS CO., LTD.
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.