Granted Patent
Utility
US 6,276,404 · App. 09/661,750
Chemical delivery system with spill containment door
Inventors:
Charles Michael Birtcher, Thomas Andrew Steidl, William Jon Sheehy
Patented Case
View Patent ↗
Granted: Aug 21, 2001
Filed: Sep 14, 2000
Inventors
Charles Michael Birtcher
Thomas Andrew Steidl
William Jon Sheehy
Assignee (at issue)
Air Products and Chemicals, 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.