Olivier's protection quiz

[Daniel van Eijmeren]

OLIVIER to CORD WILJES, 28-08-2003:

>> Oh well, so you leave me no chance but to drop meteorites from the moon 
>> onto your comics bin.

> I'll ask Gyro to think of  something.
> Quiz: what else did Gyro invent to protect Scrooge's safe (Barks' stories)?

Gyro has invented an impervi-wax money case (WDC 171).
And in "The Pied Piper of Duckburg" (H89174), Gyro invents cheese to lure 
away rodents from Scrooge's money bin.

Those are at least two inventions I remember, apart from the already 
mentioned super-strong forbidium money bin (DISBP 1).

--- Daniël

"Call the doctor again!"
(Which Barks story?)