Golf club putter
Patent 5257807 Issued on November 2, 1993. Estimated Expiration Date: 
August 3, 2012. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
August 3, 2012. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent ReferencesInventorsApplicationNo. 924187 filed on 08/03/1992US Classes:473/312, Having core (e.g., weight, etc.) positioned in head engaging shaft end473/313, Putter473/316, Shaft473/325Plural striking facesExaminersPrimary: Millin, VincentAssistant: Passaniti, Sebastiano Attorney, Agent or FirmForeign Patent References
International ClassA63B 053/02AbstractA golf club putter including a reversed shaft, with a thin end in the grip and a thick end in the head, a shaft at the true center of gravity, and a shaft through a tapered hole in the head. The golf club putter can also include a head with hollow construction at the exact center of the head providing the putter head with a true and exact toe-heel balance relative to a shaft. The reverse tapered shaft slides through the putter head, and frictionally engages in the head with a thin end of the shaft in a grip and a thick end of the shaft in the head. In the alternative, the shaft can glue onto a pin extending upwardly from the putter head. | |
