sperk,
I know the constructions with "there + to be" such as:
There is the ice on the lake.
There are some people outside.
There might be drinks if you wait for a bit.
etc
I comprehend the sentence: There are just a few of the 'wireless telegraphs' the factory produced.
I comprehend the sentence: Just a few of the 'wireless telegraphs' the factory produced left in the world.
But There are just a few of the 'wireless telegraphs' the factory produced left in the world. remains unintelligible to me (It so happens that there are two predicate: "are" and "left" but that is not possible.