Stock material or miscellaneous articles – Structurally defined web or sheet – Edge feature
Patent
1989-10-03
1992-02-18
Robinson, Ellis P.
Stock material or miscellaneous articles
Structurally defined web or sheet
Edge feature
428210, 356244, 359396, 359397, B32B 2302, G02B 2134
Patent
active
050893157
ABSTRACT:
A glass slide having a top surface and a bottom surface. The slide has at least one marking surface which has a first visual appearance when viewed from the top, and a second visual appearance when viewed from the bottom so as to allow the surface to be easily distinguished.
REFERENCES:
patent: 3481659 (1969-12-01), Rosenberg
patent: 4087154 (1978-05-01), Menzel
patent: 4679914 (1987-07-01), Rosenberg
Erie Scientific Company
Loney Donald J.
Robinson Ellis P.
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