Interference No. 103,878
which mates with a complementary flange on the head. No light
can escape from the lamp in an upward direction. The
reflector is formed of aluminum with a finish on the reflector
of natural, unpainted aluminum. The interior of the reflector
is of such a con- figuration that light is reflected
downwardly to the open end of the reflector member with a
substantially 90E cutoff. The reflector has toggle latches to
mount the reflector to the head. Wilkerson and Kenyon both
state that the Alzak finish the General Electric exhibit
discloses is a matte finish. JP8; JP13.
The luminaire of the General Electric publication
differs from the claimed subject matter of the senior party
patent in that the reflector is not entirely open to the
atmosphere, since a clear glass diffuser is mounted to the
lower, open end of the reflector. Also, as required by claims
3 and 4 of the senior party’s involved patent, the General
Electric reference is silent with respect to being spun from
the disclosed aluminum material.
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