B - Operations – Transporting – 29 – C
Patent
B - Operations, Transporting
29
C
18/1205
B29C 1/10 (1980.01)
Patent
CA 1061517
A SAND CORE PORTION Abstract of the Disclosure A sand core comprises an annular core body of granular material, and an annular, substantially inextensible member formed integrally with such body. The core further comprises an outer surface and an inner surface, the annular, substantially inextensible member forming part of the outer surface.
291396
Ball Glenn A.
Grawey Charles E.
Zook Donald G.
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