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| Patents for Sunnen Products Company | |||||
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| Number | Date | Patentee | Title | Type | |
| 1,588,504 | Jun. 15, 1926 | J. Sunnen | Valve Lifter | valve spring tools | |
| 1,720,802 | Jul. 16, 1929 | J. Sunnen | Compressor For Springs of Internal Combustion Engines | valve spring tools | |