Granted Patent
Utility
US 4,646,607 · App. 06/604,935
Annular saw blade
Inventor:
Mats Johansson
Patented Case
View Patent ↗
Granted: Mar 3, 1987
Filed: Apr 27, 1984
Inventor
Mats Johansson
Assignee (at issue)
M. J. Maskiner Aktiebolag
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.