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Patents for Petter J. Frantze | |||||
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Picture | Number | Date | Patentee | Title | |
![]() | 141,214 | Jul. 29, 1873 | J.A. Gregersen, P.J. Frantze, M. Tillesen | Improvement in machines for cutting balusters | |
![]() | 156,559 | Nov. 03, 1874 | P.J. Frantze | Improvement in lathes |