可以帮我分析一下这个英语句子的句型和句式和成分吗

Conceived when he was in college and now in its 28th year of operation, Smith's exquisite brainchild has become the standard for door-to-door package delivery.

Conceived when.... operation 是 状语
Smith's exquisite... brainchild 是主语
has become 是 系动词
the standard 是表语
for... delivery 则是后置定语，修饰表语 the standard

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