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| Patents for John O. Berg | |||||
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| Picture | Number | Date | Patentee | Title | |
 | FR-482,422 | Mar. 20, 1917 | J.O. Berg | Tool for treating stone, concrete and other materials | |
 | 1,223,359 | Apr. 24, 1917 | J.O. Berg | Tool for treating stone, concrete and other materials | |
| GB-106,701 | Jun. 07, 1917 | J.O. Berg | Tool for treating stone, concrete and other materials | ||
 | 1,230,842 | Jun. 26, 1917 | J.O. Berg | Tool for treating stone, concrete and other materials | |
 | RE14,392 | Nov. 13, 1917 | J.O. Berg | Tool for treating stone, concrete and other material | |