F
SECTION F — MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  
ENGINES AND PUMPS
 F03
MACHINES OR ENGINES FOR LIQUIDS (for liquids and gases F01; positive-displacement machines for liquids F04); WIND, SPRING, WEIGHT, OR MISCELLANEOUS MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
 F03H
PRODUCING A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR (from combustion products F02K)
 F03H 1/00
Using plasma to produce a reactive propulsive thrust (generating plasma H05H 1/00)
 F03H 3/00
Using photons to produce a reactive propulsive thrust
 F03H 5/00
Producing a reactive propulsive thrust, not otherwise provided for