Granted Patent
Utility
US 4,546,723 · App. 06/602,195
Method and apparatus for applying sealant to insulating glass panel spacer frames
Inventors:
Edmund A. Leopold, Glen D. McKeown
Patented Case
View Patent ↗
Granted: Oct 15, 1985
Filed: Apr 19, 1984
Inventors
Edmund A. Leopold
Glen D. McKeown
Assignee (at issue)
Glass Equipment Development, Inc.
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.