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| Patents for I. J. Masson | |||||
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| Number | Date | Patentee | Title | Type | |
| 206,569 | Jul. 30, 1878 | C.P. Housum | Tag for Marking Animals | ||
| 378,890 | Mar. 06, 1888 | F. Larson | Bench Dog | bench stops | |
| 380,360 | Apr. 03, 1888 | J.G. Smith, J.C. Spencer | Combined Rule, Square, Bevel, Calipers, &c. | marking gauges | |