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| Patents for Peter Mullen | |||||
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| Number | Date | Patentee | Title | Type | |
| 747,563 | Dec. 22, 1903 | P. Mullen | Chain-guard | hoists, winches, come-alongs | |
| 760,908 | May 24, 1904 | P. Mullen | Hoisting mechanism | hoists, winches, come-alongs | |
| 788,606 | May 02, 1905 | R.F. Scott, P. Mullen | Hoisting mechanisms | cranes | |