As this Court explained 100 and some years ago in its Burrows-Giles opinion, such constructions are accorded very great weight and, as that Court went on to say, when consistent and unchallenged for over a century are almost conclusive that consistent construction by Congress of its authority under the Copyright and Patent Clause now has lasted from the 105th -- from the first through the 105th Congress.
Congress has been around for at least 104 years.
( z1 exist :ARG1 ( z2 government-organization :name ( z3 name :op "Congress" ) ) :duration ( z4 at-least :op ( z5 temporal-quantity :quant 104 :unit ( z6 year ) ) ) )