Granted Patent
Utility
US 4,134,178 · App. 05/844,803
Adjustable roller assembly for sliding doors and the like
Inventor:
Richard Stevens
Patented Case
View Patent ↗
Granted: Jan 16, 1979
Filed: Oct 25, 1977
Inventor
Richard Stevens
Assignee (at issue)
ARTERICA INC.
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.