In 1991 a story was published about Gyro Gearloose inventing invisible glass.
He decides to take the glass to the patent office to claim his right to the invention, not realizing the bureaucrat patent officer's dedication to health and safety.
An enormous amount of warning stickers are stuck onto the glass, and as Gyro Gearloose walks home with his now not so invisible object people on the street believe he has invented flying stickers.
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