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| Patents for Alonzo W. Postlethwaite | |||||
| Picture | Number | Date | Patentee | Title | |
![]() | CA-57,238 | Aug. 28, 1897 | A.W. Postlethwaite, Z.Y. Postlethwaite, L.W. Everhart | Wrench | |
![]() | 609,762 | Aug. 23, 1898 | L.W. Everhart | Wrench | |