As a patent attorney...
OK, some of this may have been hit before, and I apologize for not sifting through all 200+ messages first, but:
1. The patent was filed for in October 2003, and issued last week. (This was already pointed out.)
2. The patent is for a "display device with a movable assembly". But in order to show how is connects to something, a base of some sort had to be shown. Besides, the pyramid gives nothing away about any potential base design. The one thing that it does show is that the arm gets connected at the top, through a single point. (If they had drawn a watermelon in there, I'm sure there'd be a series of posts about harnessing the electrical power of fruit.)
3. The timing of the issuance of the patent is completely out of Apple's control. No one can predict how long examination will take, even for a design patent. And then, after the patent is allowed by the USPTO, an issue fee must be paid. While there's a set deadline for that, when it's paid has an effect on when the patent will issue, and can be paid at any time prior to the deadline. And then there's a delay prior to actual issuance. All of that assumes that nothing goes wrong at the USPTO.
4. Having a patent on something doesn't mean it has to be used. With all of the iMac look-alikes that were out there (and wanna-bes that never got out), this could have been purely a defensive move on Apple's part.
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CYA disclaimer: This is not legal advice, and I'm hoping that you didn't think it was. I have never done any legal work for Apple. And this is a monitor arm, not Soylent Green!