U.S. federal trademark · Serial No. 74135513
block of rubber-like resilient material with a finger hole for removably attaching the block to a user's finger and a separate bore substantially parallel to the finger hole for snugly receiving the shaft of a writing implement so that the writing implement can be manipulated by movement of the user's finger without tight grasping of the shaft of the implement being required
Source: USPTO federal trademark records. Informational only, not legal advice. Status and details may lag the live USPTO database.