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US 4,070,781 AGranted
Windows bearing an inscription
AssigneeSaint-Gobain Industries
InventorGerd Sauer
Life of this patent
Estimating the term…
Abstract
A window glass having an inscription thereon formed from a semi-reflective transparent material. The inscription is visible when it is viewed against a dark background and does not interfere with vision through the glass when viewed against a light background.
Claims9
In a window glass extending across a window into an interior space having a lower brightness level than outside said space, said glass comprising the sole means extending across the window for closing it and having an inscription thereon, the improvement where the inscription comprises:
- a. a semi-reflective, transparent layer applied to the surface of said glass.
Dependencies are inferred from the claim text.