Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – At least one aryl ring which is part of a fused or bridged...
Reexamination Certificate
2005-07-26
2005-07-26
Mulcahy, Peter D. (Department: 1713)
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
At least one aryl ring which is part of a fused or bridged...
C524S300000, C524S322000, C524S365000, C106S038240, C106S038250, C106S038700, C106S038800
Reexamination Certificate
active
06921786
ABSTRACT:
An expendable and machinable pattern material capable of being cast in large blocks without shrinkage and machined to a casting shape useful in the lost pattern process of investment casting, the material consisting essentially of ethylene-vinyl resin, fatty acid ketone, and fatty acid.
REFERENCES:
patent: 3296006 (1967-01-01), Horton
patent: 4064083 (1977-12-01), Horton et al.
Horton Robert A.
Tetlow April R.
Mulcahy Peter D.
Pearne & Gordon LLP
Precision Metalsmiths, Inc.
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