I emailed the Olivetti Archives a couple weeks ago and have not heard back. I have been looking for information on Herbert Lindinger and it looks like he may still be alive! Or if he died, nobody has updated his wikipedia page.
I have not found a contact for him yet but have emailed a German university he was associated with to see if they have any way to contact him.
What if this is the designer of the label and he is still alive??
found his website and holy shit he designed everything from trains and buses to computer fonts to corporate logos (like mont blanc) and it looks like he and his team even designed the all the greatest hits from ISO 780 like the FRAGILE wine glass, the KEEP DRY umbrella, and the THIS SIDE UP double arrow. didn't see the PERISHABLE symbol on his website but I just sent him an email about it.
please check out his web page; it's rad as hell
https://www.lindingerdesign.de/cms/index.php/lindinger-design.html
found his website and holy shit he designed everything from trains and buses to computer fonts to corporate logos (like mont blanc) and it looks like he and his team even designed the all the greatest hits from ISO 780 like the FRAGILE wine glass, the KEEP DRY umbrella, and the THIS SIDE UP double arrow. didn't see the PERISHABLE symbol on his website but I just sent him an email about it.