US Patent: 3,868,790
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| Spark plug cleaner
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Patentee:
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| Roy A. Fricke (exact or similar names) - River Forest, IL |
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Patent Dates:
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| Applied: |
Aug. 17, 1973 |
| Granted: |
Mar. 04, 1975 |
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Jeff Joslin
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Description: |
| This spark plug cleaner has been seen bearing a script "Automark" brand name plus this patent number, but no company name. The script "Automark" is identical to that seen on an example of the spark plug gauge of patent 3,122,837. The trademark registration gives us the name of the manufacturer as shown here. |
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