Chainring Patents US 0540,718S US 0599,717S US 0599,255S US 0599,716S US 0599,718S US 0599,719S U.S. Pat. No. 8,092,329 U.S. Pat. No. 8,506,436 U.S. Pat. No. 8,617,015 U.S. Pat. No. 8,821,329 U.S. Pat. No. 9,677,658 U.S. Pat. No. 9,791,033 Other Patents Pending
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