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All Patents in class 33/558.2 | |||||
Number | Date | Patentee | Title | Type | |
1,430,990 | Oct. 03, 1922 | H. Hendrickson | Calipers | calipers | |
1,710,414 | Apr. 23, 1929 | H. Falletta | Compass for Drawing Parallel Lines | compasses |