Granted Patent
Utility
US 6,142,352 · App. 09/262,885
Roofing washer-dispensing and fastener-driving machine
Inventors:
Paul M. Larson, Riaz Hasan, Sigismund G. Paul
Patented Case
View Patent ↗
Granted: Nov 7, 2000
Filed: Mar 8, 1999
Inventors
Paul M. Larson
Riaz Hasan
Sigismund G. Paul
Assignee (at issue)
ILLINOIS TOOL WORKS 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.