Granted Patent
Utility
US 4,917,682 · App. 07/118,831
Leak resistant elastic waist diaper
Inventors:
Eugene P. Lancaster, Andrew Urban
Patented Case
View Patent ↗
Granted: Apr 17, 1990
Filed: Nov 9, 1987
Inventors
Eugene P. Lancaster
Andrew Urban
Assignee (at issue)
Weyerhaeuser NR Company
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.