Granted Patent
Utility
US 5,982,089 · App. 08/150,099
Low-pressure mercury discharge meander lamp dimensioned for even illumination and favorable power consumption
Inventors:
Gustaaf A. Wesselink, Franciscus A. S. Ligthart
Patented Case
View Patent ↗
Granted: Nov 9, 1999
Filed: Nov 19, 1993
Inventors
Gustaaf A. Wesselink
Franciscus A. S. Ligthart
Assignee (at issue)
U.S. Philips Corporation
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.