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| Patents for W. H. Nicholson & Co., Inc. | |||||
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| Number | Date | Patentee | Title | Type | |
| CA-151,489 | Nov. 04, 1913 | J.B. Armstrong | Trap Valve | steam and water separators | |
| 1,080,507 | Dec. 02, 1913 | J.B. Armstrong | Trap-Valve Mechanism | steam and water separators | |