Porta Biciclette (Window Bike)
The image was found here, but the little icon says SuperEdo.it
I'll be the first to admit that it's difficult to find places to store bikes (I have six...three are parked in my living room; one hangs from the ceiling on a bicycle pulley system). But I have to admit I've never seen anyone hang a bike out a window...pretty ingenious.
Thanks for reading and posting.
I myself maintain 10 bicycles....but I have 5 children and so there are always a few that they have not yet grown into.
Take care and stay warm!