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| All Patents in class 285/201 | |||||
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| Number | Date | Patentee | Title | Type | |
| 132,699 | Oct. 29, 1872 | M. Stephens | Improvement in pipe-couplings | pipes | |
| 1,307,734 | Jun. 24, 1919 | A.V. Gullborg | Lubricating Means | oil cups | |
| 1,948,725 | Feb. 27, 1934 | J.D. McClintock | Safey Connection | low water alarms | |