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| All Patents in class 33/574 | |||||
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| Picture | Number | Date | Patentee | Title | |
 | 34,412 | Feb. 18, 1862 | F. Deluce | Centering Implement | |
 | 93,937 | Aug. 17, 1869 | D.A. Wilcox | Improved centring-awl | |
 | 611,625 | Oct. 04, 1898 | J.E. Goddard | Gaging Implement | |
 | 713,021 | Nov. 04, 1902 | L.S. Starrett | Prick Punch and Spacing Tool | |
 | 824,867 | Jul. 03, 1906 | W. Houghton | Combined Marking-Peg and Center-Punch | |
 | 1,000,659 | Aug. 15, 1911 | W.D. Adams | Marking and Spacing Device | |
| 1,777,653 | Oct. 07, 1930 | H.C. Rehm | Center Punch | ||