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 How long are patents on products good for?

Answer How long patent protection lasts in the United States varies depending on the product. For applications filed on or after June 8, 1995, utility and plant patents usually last 20 years. Design paten... Read More »
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Top Q&A For: How long are patents on products good for

How Long Are Patents Good for?

Patents issued before June 8, 1995, are valid for 17 years from the patent issue date or 20 years from the patent application filing date, whichever is earlier. Patents issued after June 8, 1995 (e... Read More »
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How long are patents good?

The Georgia Tech Library reports that "utility and plant patents issued since June 8, 1995 expire 20 years from the date of application with the payment of maintenance fees." If the utility or plan... Read More »
http://www.answerbag.com/q_view/2101193

Which is a good wide angle lens for Nikon D40X i need good close up picture of our large products in Silverware brass and they are shiny products?

When photographing highly reflective objects, the lens is far less important than the lighting, and the lighting depends on what effect you are after. This is one of the most difficult, advanced as... Read More »
http://wiki.answers.com/Q/Which_is_a_good_wide_angle_lens_for_Nikon_D40X_i_need_good_cl...

How long do patents last in the U.S.?

After June 8, 1995, grant and utility patents last for 20 years from the date of application. Design patents last for 14 years after the date of the patent grant. Normally, only an act of Congress ... Read More »
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