File:Churchkey patent 1996550.jpg
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| Date/Time | Dimensions | User | Comment | |
|---|---|---|---|---|
| current | 19:00, 29 September 2011 | 2,500 × 2,400 (1.11 MB) | Materialscientist | {{Information |Description=This is a picture I took of my grandfather's Churchkey. He likely bought this new in Milwaukee sometime in the late 30's. The US Patent #1996550 stamp can barely be seen on the front side. |Source=[http://en.wikipedia.org/wiki/F |
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