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How can I determine which specific elements of the Tower Garden product are protected by Patent US7,055,282?

The Tower Garden, with patent number 7,055,282 describes a vertical aeroponic garden device. Many people have made similar devices over the years and there have been patents for some of them. I have ...
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How do you determine a patent expiration date (US 7,055,282 B2)?

How can I determine the lifetime of a patent? For example, how can I tell when Patent US 7,055,282 B2 expires?