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| Patents for James Oppenheimer | |||||
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| Number | Date | Patentee | Title | Type | |
| 307,065 | Oct. 21, 1884 | J. Oppenheimer | Mortising machine | portable timber mortisers | |
| 308,850 | Dec. 02, 1884 | J. Oppenheimer | Lathing apparatus | carpenter | |
| CA-21,971 | Jul. 02, 1885 | J. Oppenheimer | Mortising machine | portable timber mortisers | |
| RE10,655 | Oct. 27, 1885 | J. Oppenheimer | Mortising-machine | mortising machines | |