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| All Patents in class 285/136.1 | |||||
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| Number | Date | Patentee | Title | Type | |
| 1,819,417 | Aug. 18, 1931 | J.H. Holmgreen | Joint Packing | packing for joints | |
| 2,042,229 | May 26, 1936 | R.E. Jones | Detachable Union | plumbing fittings | |