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| Patents for Bostock & Pancoast | |||||
| Picture | Number | Date | Patentee | Title | |
![]() | 67,487 | Aug. 06, 1867 | E. Bostock | Improvement in adjustable parallel rulers | |
![]() | 115,019 | May 23, 1871 | E. Bostock | Improvement in adjustable rulers | |