US Patent: 1,748,819
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| Lubricating Coupler
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Patentee:
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| Oscar U. Zerk (exact or similar names) - Chicago, IL |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Applied: |
Oct. 21, 1929 |
| Granted: |
Feb. 25, 1930 |
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Joel Havens
Grease Gun Buyers Guide
Biography of Oscar Zerk
Grease Fitting
Oscar Ulysses Zerk
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Description: |
| Slough & Canfield - patent attorneys
This is the patent for the zerk grease fitting that is in common use today. |
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