| 1927 HARRY S HART Dump Car Door Control Patent |
| 1925 MINE APPLIANCES COMPANY Dump Car Patent |
| 1922 HART HARRY Dump Car NAT DUMP CAR CO Patent |
| 1924 FORT FLOWERS Dump Car Patent Print Art |
| 1926 LINDLEY KLEINHANS Railway Dump Car Patent |
| 1924 DAVID Dump Car Construction Patent Print |
| 1930 CHEELY BEULAN Dump Car Patent Print Art |
| 1928 SCHELLENTRAGER EUGENE Dump Car Patent Print |
| 1932 ARGYLE Railway Dump Car Construction Patent |
| 1927 SHEEHAN Dump Car Underframe Patent Print |
| 1929 MCGAHEY Dump Car Door Lock Patent Print Art |
| 1928 ATLAS CAR & MFG COMPANY Dump Car Patent |
| 1923 GILPIN GARTH Dump Car Door Patent Print Art |
| 1949 SHEESLEY Dump Car Door Lock Patent Print |
| 1935 ANDERSON JOHN Dump Car Patent Print Art |
| 1933 PULLMAN CAR & MFG CORP Dump Car Door Patent |
| 1956 LUNDE Dump Car Door Control Means Patent |
| 1932 DOREY Dump Car Construction Patent Print |
| 1926 HARRY IDOINE Dump Car Door Lock Patent |
| 1934 HANCOCK YOST Dump Car Patent Print Art |
| 1955 RAGNAR BERG Bottom Dump Car Patent Print |
| 1923 HART HARRY Dump Car Patent Print Art |
| 1907 MALTEY Drop Bottom Dump Car Patent 11989 |
| 1927 COMMW STEEL Dump Car Underframe Patent |
| 1921 RUNDLE WILLIAM Dump Car Latch Patent Print |
| 1926 ANDREW GERMEK Dump Car Door Lock Patent |
| 1925 HART HARRY Selective Dump Car Patent Print |
| 1944 ASTROM CARL Railway Dump Car Patent Print |
| 1923 HOSCEIT Dump Car Construction Patent Print |
| 1932 AMERICAN CAR & FOUNDRY CO Dump Car Patent |
| 1931 CURZON JOHN Dump Car JOSEPH KASTLIC Patent |
| 1931 HOSCEIT Latch For Dump Car Doors Patent |
| 1959 BONANNO JOSEPH Railway Dump Car Patent |
| 1932 LEONARD WOOD Dump Car Patent Print Art |
| 1922 CONTINENTAL CAR COMPANY Dump Car Patent |
| 1927 HOSCEIT Dump Car Door Control Patent Print |
| 1925 SHANABERGER CARL Dump Car Patent Print Art |
| 1944 AMERICAN CAR & FOUNDRY CO Dump Car Patent |
| 1949 LOCKHEED AIRCRAFT CORP Dump Car Patent |
| 1933 MUSSEY WILLIAM Dump Car Door Patent Print |
| 1925 BENBOW JAMES Railway Dump Car Patent Print |
| 1922 ENTPR RAILWAY EQUIPMENT CO Dump Car Patent |
| 1911 OTIS Drop Bottom Dump Car Patent 11986 |
| 1923 ROBERT STOVALL Dump Car Structure Patent |
| 1931 ANDREW GERMEK Dump Car Doorlock Patent |
| 1925 ENTPR RAILWAY EQUIPMENT CO Dump Car Patent |
| 1926 FORREST Drop Bottom Dump Car Patent Print |
| 1921 BEACH HOWARD Dump Car Patent Print Art |
| 1924 SLAKER Dump Car Art Print Patent |
| 1943 ZOLDOK STEPHEN Dump Car Bottom Patent Print |
| 1933 EDWARD Dump Car Art Print Patent |
| 1920 ROBERT BUTCHER Dump Car Patent Print Art |
| 1940 LIONEL CORP Toy Dump Car Patent Print Art |
| 1921 RODGER BALLAST CAR COMPANY Dump Car Patent |
| 1921 HOSCEIT WILLIAM Dump Car Patent Print Art |
| 1923 ENTPR RAILWAY EQUIPMENT CO Dump Car Patent |
| 1927 DAVID HINDAHL Railway Dump Car Patent Print |
| 1947 PETER Self Righting Dump Car Patent Print |
| 1923 HART Link Latch For Dump Car Doors Patent |
| 1927 ENTPR RAILWAY EQUIPMENT CO Dump Car Patent |
| 1920 WILSON CHARLES Dump Car Patent Print Art |
| 1943 ASTROM CARL Railway Dump Car Patent Print |
| 1923 HART HARRY Dump Car Door Latch Patent Print |
| 1924 DUNKELBERGER Toy Dump Car Coupling Patent |
| 1934 HICK Dump Car For Mines And The Like Patent |
| 1966 KERSEY Dump Car Assemblies Patent Print Art |
| 1959 LIONEL CORP Railway Dump Car Patent Print |
| 1949 KEPNER ROBERT Dump Car Control Patent Print |
| 1941 C S CARD IRON WORKS COMPANY Dump Car Patent |
| 1931 JOSEPH KASTLIC Dump Car Patent Print Art |
| 1931 PRESSED STEEL CAR CO Dump Car Patent Print |
| 1937 HANCOCK YOST Dump Car Patent Print Art |
| 1926 DUNKELBERGER Toy Dump Car Patent Print Art |
| 1952 LIONEL CORP Toy Railroad Dump Car Patent |
| 1909 IRWIN Dump Car Door Device Patent 8786 |
| 1925 MILTON BROWN Dump Car Patent Print Art |
| 1923 UNION METAL PROD CO Dump Car Door Patent |
| 1946 FRED Dump Car Construction Patent Print Art |
| 1930 PRESSED STEEL CAR CO Dump Car Patent Print |
| 1931 KANTENWEIN OSCAR Dump Car Patent Print Art |
| 1924 ARGYLE CAMPBELL Hopper Dump Car Patent |
| 1921 NELS EKBERG Dump Car Patent Print Art |
| 1923 ARGYLE Dump Car Art Print Patent |
| 1962 RUA AND SWENDSEN INC Dump Car Patent Print |
| 1920 JACOB OCHSNER Dump Car Patent Print Art |
| 1922 NAT DUMP CAR CO Dump Car Patent Print Art |
| 1929 SCHMOHL Door For Dump Car Bodies Patent |