1
John W Williams: Enhanced color change interlocking closure strip. First Brands Corporation, Gary L Wamer, May 16, 1989: US04829641 (84 worldwide citation)

An interlocking closure device including two closure elements arranged to be interlocked over a predetermined length, each of said closure elements having different colors for establishing visually the completeness of the occlusion of the closure elements by providing color different from the closur ...


2
John W Williams: Enhanced color change interlocking closure strip. First Brands Corporation, Gary L Wamer, March 13, 1990: US04907321 (69 worldwide citation)

An interlocking closure device including two closure elements arranged to be interlocked over a predetermined length, each of said closure elements having different colors for establishing visually the completeness of the occlusion of the closure elements by providing color different from the closur ...


3
Williams John Wayne: Enhanced color change interlocking closure strip.. First Brands, December 28, 1988: EP0297070-A1 (2 worldwide citation)

An interlocking closure device including two closure elements (50, 70) arranged to be interlocked over a predetermined length, each of said closure elements (50, 70) having different colors for establishing visually the completeness of the occlusion of the closure elements (50, 70) by providing colo ...


4
Williams John Wayne: Fermoir a emboitement ameliore et etat code par couleur, Enhanced color change interlocking closure strip. First Brands Corporation, RICHES MCKENZIE & HERBERT, September 7, 1993: CA1321984

ENHANCED COLOR CHANGE INTERLOCKING CLOSURE STRIPAn interlocking closure device includingtwo closure elements arranged to be interlocked overa predetermined length, each of said closureelements having different colors for establishingvisually the completeness of the occlusion of theclosure elements b ...