Name for the 1-2-4 chord

Question

Is there a name for the chord 1-2-4?

For instance, it's appearing in Schubert's Sonata D959 in the second bar: A-B-D.

Answer 1

The measure in question:

B minor 7th. It's lacking the 5th (F♯), but that's okay, the 5th doesn't add much color. If you add it in to the right hand, you'll notice that it doesn't change the sound much.