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Apple, like many other large corporations, files patents all the time on things that will never see the light of day. Why? So competitors can't develop a technology and pass Apple by, or in the event that they do, they will have to pay boatloads of money to Apple for the pleasure to using Apple's "patented technology". Heck, companies are sometime sought for takeover not because they have a brilliant business model or amazing products, but rather because they hold patents. Google does this regularly.
As for the fuel cell powered laptop, I don't count Apple out, but I'm going to have to wait in the "interesting if true" camp. The thing about hydrogen is, as far as I understand fuel cells, it needs to be stored under high pressure in order to have sufficient supply in a reasonable space. That doesn't sound so bad, hey those little seltzer water makers use pressurized cartridges, right? Difference is that you don't use hydrogen to make fizzy water. But they did use hydrogen for dirigibles like the Hindenberg, and if I remember one fact about the Hindenberg it is this: Flammable! Now I'm sure Apple would make a laptop safer than the Hindenberg, after all mobile devices don't catch on fire. Often.
Maybe I'm way off, and the amount of hydrogen required will be so limited that it is not a serious concern. And maybe the TSA will be cool with taking hydrogen fuel cartridges on planes when you take a business trip. I actually would love to see this work; who wouldn't want a week or two of laptop battery life. But I am skeptical that we will see this in the next 10 years, even though I hope Apples surprises me and makes me look like a neo-luddite.