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| Patents for F. W. Ritter Jr. | |||||
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| Number | Date | Patentee | Title | Type | |
| 186,365 | Jan. 16, 1877 | S. Parker | Improvement in machines for racking hoops | hoop making machines | |
| RE7,673 | May 08, 1877 | J. Old | Pipe-Coupling | auxiliary wrenches | |
| 442,705 | Dec. 16, 1890 | A.W. Meston | Electric meter | electrical devices | |