(under subclass 544) Subject matter consisting of flexible material having a claimed entire dimension of 6 mils (0.006 inches; 0.01524 cm; 152.4 micron; 152,400 angstroms) or less, or greater gauge than 34. Reference: Metals Handbook, 8th Edition, Volume 1 (1961), page 18.
(1) Note. An article or material defined as a metal foil, leaf or film, without any numerical reference to its thickness is placed in these subclasses (606+).
(2) Note. A patent is not placed in this subclass because of a mere component which meets the definition of the subclass.
(3) Note. See the main class definition of this class (428), section VI, C, 2, a, for loci of other subject matter relating to filaments.
SEE OR SEARCH THIS CLASS, SUBCLASS:
220, for a nonmetallic* sheet or web where the entire dimension is claimed for the complete product, which may or may not be smaller than 6 mils.
401, and 903, for a structurally defined nonmetallic* filament which may or may not be smaller than 6 mils. 605, to complete a search for metal filaments.
923, for a collection of metallic and stock-materials* having
specified dimension.
SEE OR SEARCH CLASS
29, Metal Working,
17.1+, for foil and thin sheet-metal making.
126, Stoves and Furnaces,
19, for foil or film components in an oven part.
205, Electrolysis: Processes, Compositions Used Therein, and Methods of Preparing the Compositions,
