Granted Patent
Utility
US 6,553,733 · App. 09/437,165
Glass block with internal capsule
Inventors:
Donald E. Hock, John T. Verch
Patented Case
View Patent ↗
Granted: Apr 29, 2003
Filed: Nov 10, 1999
Inventors
Donald E. Hock
John T. Verch
Assignee (at issue)
Pittsburgh Corning 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.