Granted Patent
Utility
US 4,670,688 · App. 06/334,095
Fluorescent lamp with improved lumen output
Inventors:
A. Gary Sigai, John Flaherty
Patented Case
View Patent ↗
Granted: Jun 2, 1987
Filed: Dec 24, 1981
Inventors
A. Gary Sigai
John Flaherty
Assignees (at issue)
GTE Products Corporation
GTE Laboratories Incorporated
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.