Granted Patent
Utility
US 4,850,992 · App. 07/018,655
Fastening and sealing system for diapers
Inventors:
Everson Amaral, Rosana R. Das Neves
Patented Case
View Patent ↗
Granted: Jul 25, 1989
Filed: Feb 25, 1987
Inventors
Everson Amaral
Rosana R. Das Neves
Assignee (at issue)
Chicopee
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.