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Title: |
1912 ad - Neverleak Tire Fluid |
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Source: |
May 1912 Automobile Trade Journal page 269 |
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Insert Date: |
9/28/2023 9:40:22 AM |
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The product claims to be patented March 9, 1897 (implying that the patent had just expired by the time of the ad). We could not find any patent issued that day matching this tire fluid. The closest match is patent 578,433 which is for a tire repair method but the claims only cover the use of a sealant in combination with a string threaded through the valve opening that is used to pull a plug into the puncture. |
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