| Patents for E. M. Watson |
Patents 1 -
7
of 7
      |
| Number | Date | Patentee | Title | Type |
| 383,031 | May 15, 1888 | A. Allgoever | Drill-stock | hand drills |
| 393,080 | Nov. 20, 1888 | C.L. Seabury | Naphtha Engine | |
| 395,592 | Jan. 01, 1889 | M. Schwarzler | Feed attachment for drilling-machines | drilling and boring |
| 410,299 | Sep. 03, 1889 | C. Spofford | Machine for cutting out concavo-convex shells or dishes | specialty woodworking machines |
| 419,805 | Jan. 21, 1890 | C.W. Weiss | Thermo Dynamic Motor | external combustion engines |
| 419,806 | Jan. 21, 1890 | C.W. Weiss | Gas Engine | gas and gasoline engines |
| 422,067 | Feb. 25, 1890 | M. Berheim | Tailor's Conformating Measure | special purpose gauges |
