Granted Patent
Utility
US 5,052,427 · App. 07/586,569
Method and apparatus to facilitate the injection of sealant into a pressurized fluid member
Inventors:
Johnny L. Butler, Richard E. Wakeland, Donald R. Batson, Robert Metzger
Patented Case
View Patent ↗
Granted: Oct 1, 1991
Filed: Sep 20, 1990
Inventors
Johnny L. Butler
Richard E. Wakeland
Donald R. Batson
Robert Metzger
Assignee (at issue)
Spinsafe, 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.