| All Patents in class 277/397 |
Patents 1 -
10
of 14
      |
| Picture | Number | Date | Patentee | Title |
| | 2,105,428 | Jan. 11, 1938 | G.F. Maglott | Gear Pump Seal |
| | 2,448,195 | Aug. 31, 1948 | C.F. Schnuck | Cane Mill |
| | 2,501,984 | Mar. 28, 1950 | L.D. Alward | Shaft Seal |
| | 2,756,080 | Jul. 24, 1956 | H.A. Andresen, R.H. Andresen | Rotary Seal and Clutch Assembly |
| | 3,020,052 | Feb. 06, 1962 | R.J. Gits | Shaft Seal |
| | 3,093,381 | Jun. 11, 1963 | G. Schultz | Shaft Seal |
| | 3,116,066 | Dec. 31, 1963 | W.J. Koppius | Mating Ring and Seal |
| | 3,120,959 | Feb. 11, 1964 | R.H. Andresen, H. Jensen | Unitized Face Type Rotary Seal |
| | 3,179,425 | Apr. 20, 1965 | R.H. Andersen | Rotary Seal Employing a Flexible Sleeve |
| | 3,191,945 | Jun. 29, 1965 | R.H. Andresen | Rotary Seal With Supporting Sleeve |
