Granted Patent
Utility
US 5,253,459 · App. 07/720,281
Curtain wall structure
Inventors:
Benigno N. Parinas, Elio Toffoli, Jesse G. Vokey
Patented Case
View Patent ↗
Granted: Oct 19, 1993
Filed: Jun 24, 1991
Inventors
Benigno N. Parinas
Elio Toffoli
Jesse G. Vokey
Assignee (at issue)
Robertson-Ceco 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.