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| Patents for John C. Glenn | |||||
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| Picture | Number | Date | Patentee | Title | |
| 1,097,543 | May 19, 1914 | J.C. Glenn | Engine Valve | ||
| 1,260,184 | Mar. 19, 1918 | J.C. Glenn | Fluid-Operated Valve Mechanism | ||
| 1,354,966 | Oct. 05, 1920 | J.C. Glenn | Engine Valve Mechanism | ||
| 1,482,393 | Feb. 05, 1924 | J.C. Glenn | Engine Valve Mechanism | ||