Granted Patent
Utility
US 5,661,937 · App. 08/423,159
Mezzanine floor panel
Inventors:
Gregory E. Doppler, Donald J. French
Patented Case
View Patent ↗
Granted: Sep 2, 1997
Filed: Apr 17, 1995
Inventors
Gregory E. Doppler
Donald J. French
Assignee (at issue)
Johnson-Doppler Lumber
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.