CD 288:
Single ridge version (A three ridge version also exists)
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A crude unmarked version assumed to be a Denver (Western Flint Glass Co,) product. |
Scarce "triple ridge" version
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This CD was made to a Ralph D. Mershon 1898 patent. The ribs found on some of these are shown in the patent and were intended to direct the water so it would not splash on the cross arm.