Granted Patent
Utility
US 6,043,611 · App. 08/833,866
Dimmable compact fluorescent lamp
Inventors:
Pawel M. Gradzki, Jerzy Janczak
Patented Case
View Patent ↗
Granted: Mar 28, 2000
Filed: Apr 10, 1997
Inventors
Pawel M. Gradzki
Jerzy Janczak
Assignee (at issue)
Philips Electronics North America 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.