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| All Patents in class 261/49 | |||||
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| Number | Date | Patentee | Title | Type | |
| 642,871 | Feb. 06, 1900 | A.G. New | Heavy Oil Engine | oil engines | |
| 1,943,082 | Jan. 09, 1934 | R.E. MacKenzie | Carburetor | carburetors | |
| 2,001,993 | May 21, 1935 | W. Weber | Carburetor | carburetors | |
| 2,039,549 | May 05, 1936 | H.B. Norris | Carburetor | carburetors | |
| 2,060,747 | Nov. 10, 1936 | W.C. Rayfield | Carburetor | carburetors | |
| 2,772,865 | Dec. 04, 1956 | H.F. Budzien | Engine Fuel System | fuel systems | |