3556533 is referenced by 149 patents and cites 6 patents.

A golf club having a wooden head with the sole plate attached to the bottom of the head by screws, the heads of which screws are exposed, the fastening screws being selected from different materials and, therefore, of different weights for providing the desired balance of the head while at the same time securing the sole plate to the head.

Title
Sole plate secured to club head by screws of different specific gravities
Application Number
04/756,123
Publication Number
3556533
Application Date
August 29, 1968
Publication Date
January 19, 1971
Inventor
James E Hollis
Agent
Barlow & Barlow
Assignee
Bancroft Racket Company A corporation of Rhode Island
IPC
A63b 53/08
A63B 53/04
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