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| All Patents in class 493/74 | |||||
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| Number | Date | Patentee | Title | Type | |
| 170,039 | Nov. 16, 1875 | J.E. Williams | Improvement in paper-box machines | cardboard box making machines | |
| 2,977,860 | Apr. 04, 1961 | V.D. Hery | Machine for Producing Containers | pan making machines | |