Granted Patent
Utility
US 5,076,894 · App. 07/693,059
Suction box apparatus with composite cover elements mounted in slots on cross braces
Inventors:
Holt W. Simmons, Martin P. Franck, Danial L. Perry
Patented Case
View Patent ↗
Granted: Dec 31, 1991
Filed: Apr 30, 1991
Inventors
Holt W. Simmons
Martin P. Franck
Danial L. Perry
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.