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| Patents for Hans K. Hyrup | |||||
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| Number | Date | Patentee | Title | Type | |
| 1,657,086 | Jan. 24, 1928 | H.K. Hyrup | External Pipe Thread Cleaner and Chaser | pipe and orifice cleaners | |
| 1,700,409 | Jan. 29, 1929 | H.K. Hyrup | Pipe-Thread Cleaner and Chaser | pipe and orifice cleaners | |