Granted Patent
Utility
US 5,939,645 · App. 09/102,888
Vane anemometer having a modular impeller assembly
Inventor:
Richard Kellerman
Patented Case
View Patent ↗
Granted: Aug 17, 1999
Filed: Jun 23, 1998
Inventor
Richard Kellerman
Assignee (at issue)
NIELSEN-KELLERMAN, CO.
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.