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You can view the patent by Kenneth P. Baclawski here
I'm not 100% sure if this the corresponding Google patent, but try here or here.
Patents are actually a way of telling someone "You can't step on my grass without paying!", if you browse through at Google Patents search, you'll find out quite a load of inventions brought down and described on paper, i.e. "patented". I bet it's impossible to patent a new invention nowadays and not to cite older ones. Either way, I believe patents are evil - They actually restrict you because someone else had a bright moment and was quick enough to write it down on a piece of paper, and that someone now requests to receive from Google a "noble" (try "adequately enormous") royalty.
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