Granted Patent
Utility
US 5,278,473 · App. 08/048,554
Method of despensing mercury into arc dishcharge lamp having capsule coated with low ionization energy material
Inventors:
Ralph P. Parks, Jr., Kendrick D. Rattray, Dennis D. Spaulding
Patented Case
View Patent ↗
Granted: Jan 11, 1994
Filed: Apr 15, 1993
Inventors
Ralph P. Parks, Jr.
Kendrick D. Rattray
Dennis D. Spaulding
Assignee (at issue)
GTE Products 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.