RK

Robert Kroupa

📍 Chicago, IL: #830 of 13,327 inventorsTop 7%
🗺 Illinois: #6,059 of 84,256 inventorsTop 8%
Overall (All Time): #350,341 of 4,157,543Top 9%
14
Patents All Time

Issued Patents All Time

Showing 1–14 of 14 patents

Patent #TitleCo-InventorsDate
9788640 Attachable extendable and retractable earpiece and protective casing assembly for mobile communication and sound devices 2017-10-17
9505547 Attachable extendable and retractable earpiece and protective casing assembly for mobile communication and sound devices 2016-11-29
9237396 Attachable extendable and retractable earpiece and protective casing assembly for mobile communication and sound devices 2016-01-12
9066181 Interchangeable attachable extendable and retractable earpiece cable assembly for mobile communication and sound devices 2015-06-23
8944282 Combination container and integral attachment device Jeff Grossman 2015-02-03
D720926 Contact lens container 2015-01-13
8873250 Attachable extendable and retractable earpiece cable assembly for mobile communication and sound devices 2014-10-28
8783531 Attachable extendable and retractable earpiece and protective casing assembly for mobile communication and sound devices 2014-07-22
D704440 Contact lens container 2014-05-13
D695005 Pill case 2013-12-10
8600461 Attachable extendable and retractable earpiece assembly for mobile communication and sound devices 2013-12-03
D688041 Contact lens container 2013-08-20
D557615 Combined container and dispenser 2007-12-18
5139385 Dual pallet fork attachment for a lift truck Daniel F. Chase, Emmett C. Frison 1992-08-18