Registers – Calculators – Bar
Patent
1989-10-16
1998-10-13
Brown, Brian W.
Registers
Calculators
Bar
G06G 102
Patent
active
058215093
ABSTRACT:
A tooth mold is selected by operating a device consisting of a card having a first and second side and a plurality of strips disposed therebetween. Each side of the card and each side of the strip is provided with descriptive material for specific data. The sides of the card are also provided with windows so that manipulation of the strips will provide the necessary form of the mold.
REFERENCES:
patent: 2832252 (1958-04-01), Gabriel
patent: 2874487 (1959-02-01), Bloom et al.
patent: 3045906 (1962-07-01), Burg
patent: 3933305 (1976-01-01), Murphy
American Tooth Industries
Brown Brian W.
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