This class provides for certain special types of receptaclescalled Paperboard Boxes, File Folders, and Envelopes, and furtherprovides for certain special types of articles called Postal Cardsand Packets, and Wrappers for a mercantile unit.
(A) This is the class for envelope being defined as a substantiallyflat receptacle having two walls joined at their edges to form apocket-like enclosure made of paper or paper substitute material,which is disclosed for enclosing a sheet-like article (e.g., document)while it is being transported (e.g., mailed).
(1)Note. An envelope is usually made of paper or paper-likematerial such as a flexible sheet of cellulosic or resinous material (e.g.,plastic film).
(B) This is the class for file folders, a file folder being definedas a substantially flat receptacle having two walls connected ata bottom fold line, or to an expandable bottom wall; and which isdisclosed for storing a sheet-like article (e.g., document) in afile cabinet.
(1)Note. A file folder can have closed ends, and may be expandableto a nonflat shape.
(2)Note. A file folder is usually placed in a file cabinet undera heading which facilitates retrieval.
(3)Note. A file folder may have the secondary function of holdingan article while being transported.
(C) Wrappers- This is the class for wrappers, a wrapper beingdefined as a single-use covering having a structural element (e.g.,fastener, seal, etc.) or a specified shape adapting it for wrappinga mercantile unit, and as being made of paper or paper-substitutematerial.
(1)Note. An example of a paper-substitute material is a flexiblesheet of cellulosic or resinous material (e.g., plastic film).
(2)Note. A mercantile unit includes means in or by which goods(article or material) are displayed, protected, packaged or arranged ina particular manner to facilitate sale, transportation in commerce,use or storage.
(3)Note. A "single-use" covering is one whichis discarded after use. (Lines With Other Classes and Within ThisClass for flexible protective article covers that are reusable).
(D) This is the class for paperboard boxes, a paperboard boxbeing defined as a container made from material similar in compositionto paper but thicker and stiffer in character, the container havinga bottom portion for supporting content, peripheral wall structurefor at least partially surrounding the content, and an access opening intendedfor the insertion or removal of content.
(1)Note. A box made of cellulosic or resinous material (e.g.,plastic) which is similar in character to paperboard, and whichis manipulated in the same manner as paperboard (e.g., folded froma blank) is included here. See Lines With Other Classes and WithinThis Class for containers not provided for elsewhere.
(E) This class also provides for postal cards, letter sheets,and packets, a post card being defined as a card peculiarly adaptedcarry information and be mailed by itself; a letter sheet beingdefined as a sheet peculiarly adapted to carry information, andis disclosed as being defined as a mailing sheet having an enclosure,the packet being peculiarly adapted to carry information and bemailed as a unit.