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| All Patents in class 165/103 | |||||
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| Number | Date | Patentee | Title | Type | |
| 1,931,781 | Oct. 24, 1933 | W.H. Weber | Flow Control Device | pressure regulators | |
| 2,884,228 | Apr. 28, 1959 | R. Jorgensen | Air conditioning units | air conditioning apparatus | |