Granted Patent
Utility
US 5,131,121 · App. 07/673,706
Protruding end stops for plastic reclosable fastener
Inventors:
F. John Herrington, Eric A. St. Phillips
Patented Case
View Patent ↗
Granted: Jul 21, 1992
Filed: Mar 22, 1991
Inventors
F. John Herrington
Eric A. St. Phillips
Assignee (at issue)
Mobil Oil Corporation
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.