Granted Patent
Utility
US 5,211,439 · App. 07/861,025
Curvilinear sliding visor
Inventors:
Nels R. Smith, Jerry M. De Jong
Patented Case
View Patent ↗
Granted: May 18, 1993
Filed: Mar 31, 1992
Inventors
Nels R. Smith
Jerry M. De Jong
Assignee (at issue)
Prince 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.