From appendix A5/6: This company made rockets like the Rocksonde, model 200. The rocket engine is the Cooper Development RM-2210 that gave 2030 lbs for 1.9 seconds.

“Rocksonde 200” (PiP)"

From appendix 9: They made the following known engines:
-RM-2210
-RM-2030
-Rock.Sonda 200
-Asp, -II
-RM-1100
-RM-1400
-ZSKN-SR