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Patents for Adolph F. Henrikson | |||||
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Picture | Number | Date | Patentee | Title | |
![]() | 827,443 | Jul. 31, 1906 | A.F. Henrikson | Micrometer Attachment for Linear Scales | |
![]() | 888,498 | May 26, 1908 | A.F. Henrikson | Calipers & Dividers |