Granted Patent
Utility
US 6,193,088 · App. 09/352,231
Flask vent and method of making same
Inventors:
Monty E. Vincent, John R. Costello, Jonathan N. Lipsky, Ralph W. Collins, Robert A. Giacobbe
Patented Case
View Patent ↗
Granted: Feb 27, 2001
Filed: Jul 13, 1999
Inventors
Monty E. Vincent
John R. Costello
Jonathan N. Lipsky
Ralph W. Collins
Robert A. Giacobbe
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.