Granted Patent
Utility
US 5,148,669 · App. 07/609,518
Detection of particulates in a hot gas flow
Inventor:
Karukkampalayam M. Sellakumar
Patented Case
View Patent ↗
Granted: Sep 22, 1992
Filed: Nov 5, 1990
Inventor
Karukkampalayam M. Sellakumar
Assignee (at issue)
A. Ahlstrom Corporation
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.