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| All Patents in class 137/115.07 | |||||
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| Number | Date | Patentee | Title | Type | |
| 2,522,783 | Sep. 19, 1950 | J.P. Golden | Hydraulic Pump and Circuit | hydraulic pumps | |
| 2,869,567 | Jan. 20, 1959 | F.E. Carlson | Flow controller unit for stack valve | ||