US PATENT SUBCLASS 281 / 27.2-- .~.~.~ Metallic

US PATENT SUBCLASS 281 / 27.2
.~.~.~ Metallic

Current as of: June, 1999
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281 /	HD	BOOKS, STRIPS, AND LEAVES

15.1	DF	BOOK, ELEMENT THEREOF, OR ACCESSORY THEREFOR {9}
21.1	DF	.~ Binding {8}
27.1	DF	.~.~ Ring or arch {1}
27.2		.~.~.~ Metallic

DEFINITION

Classification: 281/27.2

Metallic:

(under subclass 27.1) Subject matter wherein the ring or arch type securing means includes some element made from metallic material.

SEE OR SEARCH THIS CLASS, SUBCLASS:

27.3, for a securing means other than the ring or arch type which includes some metallic element, and see the Search Class Notes appended thereto.

SEE OR SEARCH CLASS

140, Wireworking,

92.3+, for a process or apparatus for intercoiling a rotated helix with the aligned edge perforations of sheets or leaves to make a "spiral" bound book.