Copying is a stalwart of the manufacturing industry, which is always one step ahead of the patent laws it seems to me.
Somebody comes up with a good idea, and every body else produces something 'similar' but 'different' enough to avoid copyright. Happens right across the board.
You can patent a specific product, but to patent an idea ? .... never going to happen.
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"I say we take off, nuke the site from orbit. It's the only way to be sure."
Corporal Hicks
(Actually Ripley said it first.)
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