Granted Patent
Utility
US 4,592,573 · App. 06/601,977
Three-dimensional pop-up message display stationery
Inventor:
Christopher S. Crowell
Patented Case
View Patent ↗
Granted: Jun 3, 1986
Filed: Apr 19, 1984
Inventor
Christopher S. Crowell
Assignee (at issue)
STRUCTURAL GRAPHICS, LLC
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.