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The Harris-Thomas Drop Forge Company
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Dayton, OH, US
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Patents Grants
last 30 patents
Information
Patent Grant
Forging apparatus
Patent number
4,543,812
Issue date
Oct 1, 1985
The Harris-Thomas Drop Forge Company
Donald L. Theobald
B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
Information
Patent Grant
Forging method
Patent number
4,463,590
Issue date
Aug 7, 1984
The Harris-Thomas Drop Forge Company
Donald L. Theobald
B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
Information
Patent Grant
Apparatus and method for forging a bicycle crank
Patent number
3,940,969
Issue date
Mar 2, 1976
The Harris-Thomas Drop Forge Company
Joseph B. Princehouse
B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
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last 30 patents
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