Granted Patent
Utility
US 5,335,486 · App. 07/964,453
Apparatus and method for producing fluid-containing envelopes
Inventor:
W. Mark Davis
Patented Case
View Patent ↗
Granted: Aug 9, 1994
Filed: Oct 21, 1992
Inventor
W. Mark Davis
Assignee (at issue)
Alden Laboratories, 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.