| Patents for Earl M. Boat |
Patents 1 -
11
of 11
      |
| Number | Title | Classification(s) |
| 2,443,880 | Dial Gauge for Measuring Small Bores | 33/544.5 |
| 2,527,173 | Shockproof Dial Indicator | 33/703, 33/832, 33/DIG.6 |
| 2,547,364 | Gauge Head for Small Bores | 33/542.1 |
| 2,587,099 | Resilient Head for Dial Bore Gauges | 33/542, 74/503 |
| 2,601,496 | Dial Bore Gauge | 33/542, 33/544.5 |
| 2,702,946 | Dial Bore Gauge | 33/542.1, 33/555 |
| 2,707,931 | Tolerance Marker for Dial Indicator Gages | 116/296, 116/300, 116/DIG.21, 116/DIG.23 |
| CA-520,899 | Dial Bore Gage | |
| 2,993,280 | Right Angle Dial Bore Gage | 33/501.4 |
| 3,316,650 | Dial Bore Gage with Retraction Means | 33/544.5 |
| CA-782,212 | Dial Bore Gage with Retraction Means | |
