Granted Patent
Utility
US 5,213,346 · App. 07/746,747
Method and apparatus for sealing between two relatively articulable surfaces
Inventors:
William Frederick Thomson, Calvin C. Chase
Patented Case
View Patent ↗
Granted: May 25, 1993
Filed: Aug 19, 1991
Inventors
William Frederick Thomson
Calvin C. Chase
Assignee (at issue)
Ingersoll-Rand Company
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.