Granted Patent
Utility
US 5,074,044 · App. 07/691,741
Dust disposal attachment for a rotary element of a power tool
Inventors:
C. Warren Duncan, William D. Glynn
Patented Case
View Patent ↗
Granted: Dec 24, 1991
Filed: Apr 26, 1991
Inventors
C. Warren Duncan
William D. Glynn
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.