04043563 is referenced by 160 patents and cites 11 patents.

A golf club having an impact block disclosed in the bottom portion of the club head. The impact block has a plurality of openings therein for slidably receiving weights therein. A removable cap provides access to the weights. The impact block could be made integral with the sole plate.

Title
Golf club
Application Number
277739
Publication Number
4043563
Application Date
November 6, 1975
Publication Date
August 23, 1977
Inventor
Roy Alexander Churchward
6444-19TH Ave. S., Richfield, 55423
MN, US
Agent
Norman P Friederichs
IPC
A63B 53/08
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