Granted Patent
Utility
US 4,599,035 · App. 06/694,972
Article raising and lowering apparatus
Inventors:
Albert P. Goodlad, Ralph De Stephanis
Patented Case
View Patent ↗
Granted: Jul 8, 1986
Filed: Jan 25, 1985
Inventors
Albert P. Goodlad
Ralph De Stephanis
Assignee (at issue)
RCA 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.