Stock material or miscellaneous articles – Structurally defined web or sheet – Discontinuous or differential coating – impregnation or bond
Patent
1989-05-03
1991-01-29
Robinson, Ellis P.
Stock material or miscellaneous articles
Structurally defined web or sheet
Discontinuous or differential coating, impregnation or bond
401592, 401581, 40159, 428 13, 428 14, 428 38, 428136, 428198, 428130, 428514, 428337, 428192, 353120, 206449, G03B 2164, B32B 310
Patent
active
049885561
ABSTRACT:
A device for mounting a transparency. The device includes back and front sheets of transparent plastic. The outer edges of the sheets are continuously bonded together. In a preferred embodiment, an opaque coating on the front sheet defines one or more generally rectangular windows. Each window is variously sized to permit the transparency to be viewed therethrough but to prevent light from leaking around the transparency. The sheets are continuously bonded together along three sides of the window to form a pocket between the sheets for mounting the transparency. A slit is formed along a fourth side of the window for inserting the transparency into the pocket.
REFERENCES:
patent: 1840719 (1932-01-01), Hutchinson
patent: 4105319 (1978-08-01), Wells et al.
patent: 4263357 (1981-04-01), Holson
patent: 4320158 (1982-03-01), Seeley
patent: 4333254 (1982-06-01), Stevenson
patent: 4393107 (1983-07-01), Jenkins
patent: 4402585 (1983-09-01), Gardlund
patent: 4476174 (1984-10-01), Carrera
patent: 4635796 (1987-01-01), Ozeki
patent: 4642925 (1987-02-01), Thompson
Montes Ralph A.
Nilsen Carl G.
Schoen Douglas R.
Sternheimer Arthur
Weisling Gary L.
Block Drug Co. Inc.
Robinson Ellis P.
Watkins III William P.
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