I listed reliability (A, B, C, D), as I received them. Some of the D's I haven't received, but most of them I have received once. A is always there, B usually is. C is somewhere around 50%, so I ignore C and D channels, and only use B when I must. Channel 68 is D, and I've never received it.
Also, I corrected what TIVO said, regarding channel names. I should, however, correct a few more channel listings, but haven't got around to it.
As far as patents - I think bare wire is a pretty old idea, that dates back to Marconi, maybe even to Tesla.
A ham radio operator tells me that it is very common to string a wire up to a tree branch, and back down, in an inverted V pattern. It's not very directional, and isn't precisely tuned to your frequency, but is otherwise very effective. Sometimes they get fancy and create a true center-tap dipole, and they usually match impedance and ground part of it, but I'm lazy.
Also, someone I know who worked in the comm station on an aircraft Carrier during the Vietnam war tried replacing the Navy's fancy antenna with bare wire, and it worked better there too, though of course they went back to the Naval spec'd antenna. So the idea is at least that old.
My personal conclusion is that a lot of antenna ads are pure hype - especially the unidirectional indoor antenna ads. One doesn't really need a $40 - $60 amplified antenna that one casually mounts behind the TV.
OTOH, not everyone has an attic. And the biggest factor in signal strength seemed to be how high I mounted the antenna. So it's almost certain that a well-designed roof-top antenna must do better than anything in the attic. I wouldn't trust a simple bare wire anywhere it could be hit by lightning.