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| All Patents in class 123/DIG.6 | |||||
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| Number | Date | Patentee | Title | Type | |
| 870,001 | Nov. 05, 1907 | C.H. Way | Engine | ||
| 2,058,055 | Oct. 20, 1936 | A.C. Boock | Internal Combustion Engine | internal combustion engines | |