Longtime ago, I learned that I should put the article "a/an" between "such" and a singular countable noun following "such." However, I have encountered many counterexamples like the following sentence I excerpted from the US Tax Code:
The Secretary of the Interior or such officer as he may designate, shall furnish the land offices at.
In addition, there are many similar usages of "such" in some contracts, including "such firm," "such person," etc.
... as interested in any transaction with such firm or company shall be sufficient disclosure for the purposes of voting on a resolution...
Can someone kindly explain to me why there's no article after "such" in the above-mentioned examples?