Granted Patent
Utility
US 5,465,493 · App. 08/253,073
Pipe alignment apparatus and method using green light
Inventors:
Mark D. Sobottke, Daniel R. Klemer
Patented Case
View Patent ↗
Granted: Nov 14, 1995
Filed: Jun 2, 1994
Inventors
Mark D. Sobottke
Daniel R. Klemer
Assignee (at issue)
Spectra-Physics Laserplane, 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.