| 1924 KOCH CAMILLE Baby Carriage Patent Print Art |
| 1967 KOCH SONS H Releasable Strap Connector Art |
| 1969 KOCH Handling Particulate Ship Cargo Art |
| 1951 KOCH WILLIAM Bumper Guard Patent Print Art |
| 1931 JOSEF KOCH Sleeping Car Patent Print Art |
| 1961 FRITZ KOCH Magnet Toy Patent Print Art |
| 1963 KOCH Simulated Vehicle Toy Patent Print Art |
| 1932 KOCH LYNN Propeller Patent Print Art |
| 1926 FELIX KOCH Articulated Car Patent Print Art |
| 1965 KOCH SONS H Snap Fastener A Loop Strap Art |
| 1961 KOCH Coupling Art Print |
| 1944 RUDOLF KOCH Aircraft Wing Patent Print Art |
| 1940 KOCH CHARLES Billiard Cue Patent Print Art |
| 1922 MARY KOCH CLARA SCHNEIDER Luminous Log Art |
| 1934 JOHN KOCH Toy Patent Print Art |
| 1928 KOCH WILLIAM Bridle Bit Patent Print Art |
| 1967 KOCH SONS H Ground Release Parachutes Art |
| 1938 LUDWIG KOCH Spelling Game Patent Print Art |
| 1964 KOCH SONS H Connector Suspending Straps Art |
| 1941 KOCH Airplane Construction Patent Print Art |
| 1921 KOCH REINHOLD Insect Trap Patent Print Art |
| 1965 KOCH SONS H Float Floating Structures Art |
| 1924 KOCH WILLIAM Rowlock Patent Print Art |
| 1920 GOTTHARDT KOCH Engine Lock Patent Print Art |
| 1969 KOCH Life Jacket Patent Print Art |
| 1940 KOCH JR Bumper Extension Patent Print Art |
| 1940 KOCH Propeller Connection Control Art Print |
| 1926 FELIX KOCH Side Bearing Patent Print Art |
| 1933 KOCH Electric System Motor Vehicles Art |
| JOHN KOCH art catalogue New York society painter nudes |