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| Patents for Melvin M. Hann | |||||
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| Number | Date | Patentee | Title | Type | |
| 2,731,569 | Jan. 17, 1956 | M.M. Hann, F.G. Lundgard, S.J. L, J.S. Cardillo | Hydraulic transmission and control | ||
| 2,769,393 | Nov. 06, 1956 | J.S. Cardillo, M.M. Hann | Hydraulic pump and control | ||
| 2,896,546 | Jul. 28, 1959 | M.M. Hann, B.H. Lundgren | Porting arrangement for hydraulic pumps and motors | ||