Granted Patent
Utility
US 5,428,482 · App. 08/079,976
Decoupled mount for optical element and stacked annuli assembly
Inventors:
John H. Bruning, Frank DeWitt, Keith Ernest Hanford
Patented Case
View Patent ↗
Granted: Jun 27, 1995
Filed: Jun 18, 1993
Inventors
John H. Bruning
Frank DeWitt
Keith Ernest Hanford
Assignee (at issue)
Federal Signal 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.