Title:
Bowling ball having means for indicating a correct hooked delivery
United States Patent 3318598


Inventors:
Henry, Ruskin
Application Number:
US57989466A
Publication Date:
05/09/1967
Filing Date:
09/16/1966
Assignee:
RUSKIN DEV & MFG CORP
Primary Class:
Other Classes:
40/327
International Classes:
A63B37/00
View Patent Images:
US Patent References:
3087727Bowling ball1963-04-30
2925273Baseball training aid1960-02-16
2843382Relocating holes in bowling balls1958-07-15
2709595Practice putting ball1955-05-31
0280807N/A1883-07-10