(under subclass 592) Process for manufacturing a gas and water device which (1) acts upon a contained fluid to allow the fluid to be discharged rapidly thereby yielding high pneumatic or hydraulic power or (2) enables a uniform steam boiler output to meet an irregular steam demand.
(1) Note. Prior to the establishment of this subclass (890.06), this subject matter was indented under "Gas and Water Device Making" (old 29/157+). Other subclasses under Class 29, subclasses 592+ have not been screened for this subject matter.
