(under subclass 52) Dispensers in which the automatic control is (1) of a dispenser utilizing a fluid under pressure to cause dispensing, or (2) of dispensers with fluid pressure discharge assistant.
SEE OR SEARCH THIS CLASS, SUBCLASS:
3+, for dispensers for dispensing gases or vapors and see the Note for the distinction between gas or vapor dispensers and gas or vapor discharge assistants.
53, and see the Notes thereto for nondispensing inert atmosphere providing means.
209, 258, 261 through 263, 373, 389, 394+, for fluid pressure discharge assistants in other combinations.
SEE OR SEARCH CLASS 137, Fluid Handling,
154+, for diverse fluid containing pressure systems comprising traps for boiler feed and fluid separating traps.
