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| All Patents in class 70/78 | |||||
| Number | Date | Patentee | Title | Type | |
| 2,249,438 | Jul. 15, 1941 | N.J. Smith | Instrument Case Lock | industrial recording apparatus | |
| 5,257,860 | Nov. 02, 1993 | G.R. Slivon | Drawer Lock Mechanism Including Push Button Latch | ||