Granted Patent
Utility
US 4,587,741 · App. 06/536,556
Ball inclinometer
Inventors:
Louis H. Rorden, Edward C. Fraser
Patented Case
View Patent ↗
Granted: May 13, 1986
Filed: Sep 27, 1983
Inventors
Louis H. Rorden
Edward C. Fraser
Assignee (at issue)
Develco, 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.