Paper clip having a coated inside loop surface

Claim 1

A paper clip formed of a single wire bent to have an outer half loop and an internesting inner half loop at one end, a single half loop at the other end and two adjacent straight wire sections extending generally parallel to one another at each side of the paper clip between said opposite ends for forming the gripping elements in combination with the internesting outer and inner half loops at said one end, said papEr clip including a coating of non-metallic material for increasing the friction between the clip and the paper disposed on a portion not greater than half of the peripheral surface of that part of the wire which forms the straight wire sections and the internesting outer and inner half loops and wherein the coated portion of the peripheral surface of the inside half loop and straight wire sections is disposed on a side opposite to that of the outside half loop and straight wire sections so as to present opposed coated surfaces effective to grip the opposite sides of the paper inserted between the half loop ends and straight wire sections.