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| All Patents in class 137/384.2 | |||||
| Number | Date | Patentee | Title | Type | |
| 1,104,022 | Jul. 21, 1914 | M. Tuttle | Combined Wrench and Lock For Shut-Off Cocks | ||
| 2,052,401 | Aug. 25, 1936 | E.R. Klemm, Jr. | Governor | internal combustion engine governors | |