David V. Trumbauer

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Bremer, IA, US

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Patents Grantslast 30 patents

Information Patent Grant
Core defining apparatus and method
- Patent number 4,844,141
- Issue date Jul 4, 1989
- Deere & Company
- David V. Trumbauer
- B22 - CASTING POWDER METALLURGY
Information Patent Grant
Crankshaft and a process for balancing the same
- Patent number 4,779,316
- Issue date Oct 25, 1988
- Deere & Company
- Jack D. Cherry
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information Patent Grant
Method for improving stength of gasifiable patterns
- Patent number 4,736,786
- Issue date Apr 12, 1988
- Deere & Company
- David V. Trumbauer
- B22 - CASTING POWDER METALLURGY
Information Patent Grant
Method for forming castings having inserts
- Patent number 4,691,754
- Issue date Sep 8, 1987
- Deere & Company
- David V. Trumbauer
- B22 - CASTING POWDER METALLURGY
Information Patent Grant
Casting methods with composite molded core assembly
- Patent number 4,462,453
- Issue date Jul 31, 1984
- Deere & Company
- David V. Trumbauer
- B22 - CASTING POWDER METALLURGY
Information Patent Grant
Casting methods with composite molded core assembly
- Patent number 4,093,018
- Issue date Jun 6, 1978
- Deere & Company
- David V. Trumbauer
- B22 - CASTING POWDER METALLURGY