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| Patents for Fred L. Heim | |||||
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| Number | Date | Patentee | Title | Type | |
| 4,246,811 | Jan. 27, 1981 | F.L. Heim, J.R. Bondhus | Ball head polygonal wrench | wrenches | |
| CA-1,122,821 | May 04, 1982 | F.L. Heim, J.R. Bondhus | Ball head polygonal wrench | wrenches | |