| 1958 HUTCHINSON Boat Propelling Device Patent |
| 1969 GEORGE E WELSH Boat Propelling Unit Patent |
| 1942 EAST Boat Propelling Means Patent Print Art |
| 1931 LOUVIER Boat Propelling Unit Patent Print |
| 1923 JOYNER Boat Propelling Device Patent Print |
| 1933 JOHN Boat Propelling Means Patent Print Art |
| 1927 JOHN Boat Propelling Mechanism Patent Print |
| 1924 OTTO Boat Propelling Mechanism Patent Print |
| 1923 BAER Boat Propelling Means Patent Print Art |
| 1922 STANISLAW Boat Propelling Device Patent |
| 1921 PARKS Boat Propelling Device Patent Print |
| 1926 PAUL Boat Propelling Mechanism Patent Print |
| 1950 GRIFFIN Boat Propelling Device Patent Print |
| 1923 NELSON Boat Propelling Device Patent Print |
| 1939 NELSON Boat Propelling Device Patent Print |
| 1960 HORN Boat Propelling Apparatus Patent Print |
| 1924 VINCENZO Boat Propelling Mechanism Patent |
| 1921 CLOWER Boat Propelling Mechanism Patent |
| 1965 FRED Boat Propelling Mechanism Patent Print |
| 1936 SIDNEY Boat Propelling Device Patent Print |
| 1961 JOHNSON Boat Propelling Means Patent Print |
| 1936 ALBERT Boat Propelling Device Patent Print |
| 1921 OLSEN Boat Propelling Pole Patent Print Art |
| 1937 BOGOIA Boat Propelling Device Patent Print |
| 1938 FROMM Boat Propelling Apparatus Patent |
| 1932 GISBERT Boat Propelling Device Patent Print |
| 1957 SNODGRASS Boat Propelling Pole Patent Print |
| 1940 PHILIP Boat Propelling Mechanism Patent |
| 1941 ALLEN Boat Propelling Mechanism Patent |
| 1950 JOHN H HUNT Boat Propelling Device Patent |
| 1933 JOHANNES Boat Propelling System Patent |
| 1929 MATTIA Boat Propelling Means Patent Print |
| 1950 HANSON Boat Propelling Means Patent Print |
| 1937 SVENDSEN Boat Propelling Mechanism Patent |
| 1927 OTTO Boat Propelling Device Patent Print |
| 1942 MELVIN Boat Propelling Mechanism Patent |
| 1954 DANIELS Boat Propelling Device Patent Print |
| 1969 WELSH Boat Propelling Unit Patent Print Art |
| 1964 JOHNSTON Boat Propelling Assembly Patent |
| 1962 JONES Boat Propelling Device Patent Print |
| 1937 KELLEY Boat Propelling Means Patent Print |
| 1929 TAYLOR Boat Propelling Means Patent Print |
| 1937 CHANDLER Boat Propelling Mechanism Patent |
| 1933 THOMPSON Boat Propelling Mechanism Patent |
| 1927 JOHNSTON Boat Propelling Mechanism Patent |