(under the class definition) Dispensers having means for permitting inspection of the contents or a part thereof.
(1) Note. Included for example are transparent graduated receptacles, receptacles, having transparent sight openings,
transparent inserts in discharge passages, etc.
(2) Note. Mere transparent receptacles, mere filling and/or dispensing openings with or without their closures or valves are not considered inspection devices and occur in appropriate subclasses below.
(3) Note. The container may be either the supply container or a trap.
SEE OR SEARCH THIS CLASS, SUBCLASS:
23+, for such subject matter combined with pointers, indicators, exhibitors, etc. 205, 215, 420, and 458, for example, for dispensers having mere transparent walls.
SEE OR SEARCH CLASS
73, Measuring and Testing,
323+, for liquid level or depth sight glasses and subclasses 426+ for measuring vessels having no dispensing features but which are provided with inspection means.
116, Signals and Indicators,
264+, for fluid flow sight devices.
137, Fluid Handling,
559, for inspection means for fluid handling systems.
184, Lubrication,
96+, for sight feeds.
217, Wooden Receptacles,
9, 11, 58 and 63, for those having display features. 221, Article Dispensing,
155, for article dispensing devices having transparent inspecting or viewing means.
