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| All Patents in class 33/566 | |||||
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| Number | Date | Patentee | Title | Type | |
| 364,508 | Jun. 07, 1887 | W.B. Griffiths | Device for Laying Off Geometric Figures | protractors | |
| 924,877 | Jun. 15, 1909 | W.A. Banfill | Casing and Marking Gage | special purpose gauges | |