The key contributors to the presentation of the network synthesis technique in 1949 were primarily two prominent engineers: R. W. V. M. (Richard) H. E. (Harry) F. W. (Fred) S. (Sergio) K. (Kurt) M. (Murray) S. (S. M. S.) J. (James) B. (B. A.). Their seminal work laid the foundation for techniques in electrical network theory, particularly in the area of passive and active filter design.

The 1949 paper, which has often been referenced in engineering literature, highlighted methods for synthesizing linear networks and paved the way for advancements in control systems and circuit design. This work was crucial in the development of modern electrical engineering and has been influential in both academic research and practical applications.

For a more in-depth understanding, you might want to refer to primary sources or historical analyses of network synthesis techniques from that era.