Granted Patent
Utility
US 5,497,557 · App. 08/313,014
Chain stretching device for a chain saw
Inventor:
Pär Martinsson
Patented Case
View Patent ↗
Granted: Mar 12, 1996
Filed: Sep 27, 1994
Inventor
Pär Martinsson
Assignee (at issue)
Aktiebolaget Electrolux
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.