Baltzar von Platen (1898-1984).  Swedish inventor.
Gas absorption refrigeration, in 1922  (with Carl Munters).

Argent, two guenons' heads combattant, winged palewise, Sable langued Gules. 
Motto :   Tout au devoir  (all for duty).

[ The above copyrighted picture is reproduced here by permission:   © 2006 Jochen Wilke ]