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| All Patents in class 285/277 | |||||
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| Picture | Number | Date | Patentee | Title | |
 | 685,677 | Oct. 29, 1901 | Z.T. Furbish | Ball-Chuck | |
| 1,873,304 | Aug. 23, 1932 | J. De Mooy | Hose Coupling | ||
| 2,473,286 | Jun. 14, 1949 | A.W. Mall | Flexible shaft machine | ||
| 2,752,801 | Jul. 03, 1956 | E.T. Olson | Fluid actuated clamp | ||