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PL412479A1
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3D laser printer
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PL410894A1
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Method for changing heat energy of gases to mechanical energy and for changing mechanical energy to heat energy of gases, through a gas turbine
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PL408050A1
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Link-and-crank hypocycloidal mechanism changing the reciprocating motion to rotary motion
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PL398500A1
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Flying vehicle drive of the vertical take-off and landing
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PL391860A1
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Method for starting a cold engine particularly at low temperatures, and a battery for applying this method
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PL391628A1
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Method for coordination the cooperation between manufacturing, service and commercial enterprises using the internet
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PL391016A1
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Method of commercial display of web addresses in Internet search engines
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PL388524A1
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Sparking plug for combustion engines
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PL385351A1
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Method of collection of fees for protection of copyrights relating to computer programs and Internet websites
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PL385194A1
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Mothod of fees collection, relating to the copyright protection concerning music works, films and multimedia files
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PL385125A1
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Method of collection of fees for copyright protection relating to films and multimedia files
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PL382340A1
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Rotating camshaft of combustion engine and piston compressors
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PL380147A1
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Connecting rod bearing for crank-and-rocker mechanisms designed to convert reciprocating motion into rotary motion
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PL378092A1
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Two-stroke internal combustion engine with overhead-valve air intake system
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