Duplicator for bowling ball finger and thumb holes

Details Duplicator for bowling ball finger and thumb holes Duplicator for bowling ball finger and thumb holes

1978-07-07

1980-03-04

Schulz, William E.

Static molds

Miscellaneous mold adjuncts

33174F, 249 83, 249177, 249219R, 425 90, 425383, 269296, E04G 1700

Patent

active

041913574

ABSTRACT:
An apparatus, and method, for producing finger and thumb holes in one bowling ball which are identic to those existing in another bowling ball; the essential purpose being to duplicate--in a new bowling ball, for example--the exact size, shape, direction, and span of the finger and thumb holes in an existing, properly hand-fitting, bowling ball.

REFERENCES:
patent: 2706338 (1955-04-01), Ackerman et al.
patent: 2840011 (1958-06-01), Rasmusson
patent: 3225448 (1965-12-01), Dorey
patent: 3255992 (1966-06-01), Kersten
patent: 3273250 (1966-09-01), Egger
patent: 3316588 (1967-05-01), Vezirakis
patent: 3411742 (1968-11-01), McArdle
patent: 3503584 (1970-03-01), Erhart et al.
patent: 3858839 (1975-01-01), Bowman
patent: 4044985 (1977-08-01), Ghang

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