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| All Patents in class 33/475 | |||||
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| Number | Title | Classification(s) | |||
| 21,861 | Square Adjustment | 33/475 | |||
| 296,157 | Try Square | 33/475 | |||
| 392,426 | Try-Square | 33/475 | |||
| 707,301 | Engineer's Square | 33/475 | |||
| 761,929 | Try Square | 33/475 | |||
| 2,126,896 | Angle Plate | 33/475, 33/534 | |||
| 4,096,634 | Method and Device for the Measurement of Angles on Space Planes | 33/475, 33/533, 73/1.75 | |||