Removable Windows for Furniture

I've had a lot of opportunities to help people move in the last little while.  I've personally seen a couch shoved into a hall way at three different angles and then, by finally breaking the wall enough, getting it to squeeze into the living room.  With all the banged up corners and scratched walls and furniture too big to make the turn it seems like someone should invent a high efficiency window that has the ability to remove it.  That way you could quickly move things in and out of rooms without having go through the back door, around the corner and through a tight fit doorway.  Now you may be thinking at this point, "But Quinn the only place with enough turn over in residents to make that idea plausible is an apartment building and they are usually multi-level."  I agree but with the slew of Baby-Boomers about to hit assisted living facilities developing single level apartments with removable windows is a great idea.