| http://www.w3.org/ns/prov#value | - To all whom it may concern: Be it known that I, HERBERT V. HARDMAN, acitizen of the United States, residing at Belleville, in the county of Essex and State of New Jersey, have invented certain new and useful Improvements in Playing-Clubs, of which the following is a specification. y invention relates to playing clubs, especially golf clubs, such as drivers and the like, in which the head of the cl
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