US PATENT SUBCLASS 48 / 203
.~ Producer

Current as of: June, 1999
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48 /   HD   GAS: HEATING AND ILLUMINATING

197 R  DF  PROCESSES {15}
203.~ Producer

DEFINITION

Classification: 48/203

Processes for making the well-known Siemens producer gas, which consists in blasting with air an ignited bed of fuel.