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| Patents for Richard D. Madison | |||||
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| Picture | Number | Date | Patentee | Title | |
| 1,888,730 | Nov. 22, 1932 | R.D. Madison | Heating device | ||
| 2,358,177 | Sep. 12, 1944 | R.D. Madison | Spray nozzle | ||
| CA-428,954 | Jul. 24, 1945 | R.D. Madison | Spray nozzle | ||
| 2,727,680 | Dec. 20, 1955 | R.D. Madison, H.C. Burgin, W.R. Elliot, R.D. Robson | Centrifugal fan | ||
| 2,827,224 | Mar. 18, 1958 | R.D. Madison, G.J. Barrie, H.C. Burgin | Inlet vane actuating device | ||
| CA-582,132 | Aug. 25, 1959 | G.J. Barrie, R.D. Madison, H.C. Burgin | Inlet vane actuating device | ||