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| Patents for Petersen Manufacturing Co., Inc. | |||||
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| Number | Date | Patentee | Title | Type | |
| 3,192,804 | Jul. 06, 1965 | C. Petersen, E.A. Allemeier, W.L. Becker | Chain Pipe Wrench. | locking pliers | |
| D261,096 | Oct. 06, 1981 | C. Petersen | Hand Tool | locking pliers | |
| 4,730,524 | Mar. 15, 1988 | C. Petersen | Long Nose Locking Plier | locking pliers | |
| 5,377,567 | Jan. 03, 1995 | J.A. Sorensen | Bicycle Tool | locking pliers | |