Granted Patent
Utility
US 6,041,669 · App. 09/108,122
Methods of and apparatus for testing and venting drums
Inventors:
Gilbert W. Brassell, John Warren, Charles E. Wickland, Harold Sanchez, Mark A. Castagneri
Patented Case
View Patent ↗
Granted: Mar 28, 2000
Filed: Jun 15, 1998
Inventors
Gilbert W. Brassell
John Warren
Charles E. Wickland
Harold Sanchez
Mark A. Castagneri
Assignee (at issue)
NFT Inc.
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.