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All Patents in class 451/370 | |||||
Number | Date | Patentee | Title | Type | |
1,498,283 | Jun. 17, 1924 | W.A. Kelsey | Dental Tool Holder | dental tools | |
1,925,808 | Sep. 05, 1933 | W.A. Kelsey | Dental Tool Holder | dental tools | |
2,741,077 | Apr. 10, 1956 | E.F. Ayer | Clamping devices | sharpening jigs and fixtures | |
4,669,227 | Jun. 02, 1987 | B.C. Treppner | Angle Plate Apparatus With Precisely Adjustable Workpiece Holder | angle bars and angle plates |