Generate a correct and concise answer for the question based on the words in the context.

Context : Luitzen Egbertus Jan Brouwer ForMemRS (Dutch: (ˈlœy̯tsə(n) ɛɣˈbɛrtəs jɑn ˈbrʌu̯ər); 27 February 1881 -- 2 December 1966), usually cited as L. E. J. Brouwer but known to his friends as Bertus, was a Dutch mathematician and philosopher, a graduate of the University of Amsterdam, who worked in topology, set theory, measure theory and complex analysis. 
Question : What was the date of death for L. E. J. Brouwer?
2 December 1966

Context : The Boeing 601 (sometimes referred to as the BSS-601, and previously as the HS-601) is a communications satellite bus introduced in 1987 by Hughes Space and Communications Company. 
Question : What year was Boeing 601 commissioned?
1987

Context : The Panzerfaust was in use from 1943 until the end of the war. 
Question : Which was the official year for the approval of Panzerfaust?

1943