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| Patents for Joseph L. Walker | |||||
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| Number | Date | Patentee | Title | Type | |
| 1,437,573 | Dec. 05, 1922 | J.L. Walker | Barrel-forming machine | barrel making machines | |
| 1,437,575 | Dec. 05, 1922 | J.L. Walker | Barrel-making machine | barrel making machines | |
| 1,452,010 | Apr. 17, 1923 | J.L. Walker | Machine for making barrel heads | barrel making machines | |
| 1,460,459 | Jul. 03, 1923 | J.L. Walker | Barrel-making machine | barrel making machines | |
| 1,460,460 | Jul. 03, 1923 | J.L. Walker | Machine for making barrels | barrel making machines | |