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Model Builders, Inc.
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Chicago, IL, US
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Patents Grants
last 30 patents
Information
Patent Grant
Method and apparatus for forming wound music string
Patent number
3,990,220
Issue date
Nov 9, 1976
Model Builders, Inc.
William H. Chaffee
B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
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Patent Grant
Panel connector
Patent number
3,962,827
Issue date
Jun 15, 1976
Model Builders, Inc.
William H. Chaffee
E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES
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last 30 patents
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