Granted Patent
Utility
US 4,959,899 · App. 07/427,731
Tube pulling device
Inventor:
Paul Walter Martin, III
Patented Case
View Patent ↗
Granted: Oct 2, 1990
Filed: Oct 27, 1989
Inventor
Paul Walter Martin, III
Assignee (at issue)
Dresser Industries, 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.