Granted Patent
Utility
US 6,227,444 · App. 09/506,126
Expandable envelope construction
Inventors:
Marvin A. Makoesky, Jerome B. Schwartz
Patented Case
View Patent ↗
Granted: May 8, 2001
Filed: Feb 17, 2000
Inventors
Marvin A. Makoesky
Jerome B. Schwartz
Assignee (at issue)
Pama Enterprises, 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.