Merle D. Wahlstrom

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South Holland, IL, US

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Patents Grantslast 30 patents

Information Patent Grant
Railroad hopper car with self-contained discharge system
- Patent number 4,617,868
- Issue date Oct 21, 1986
- Miner Enterprises, Inc.
- Merle D. Wahlstrom
- B61 - RAILWAYS
Information Patent Grant
Tamper-proof railroad hopper car door operating system
- Patent number 4,542,701
- Issue date Sep 24, 1985
- Miner Enterprises, Inc.
- Robert T. Fischer
- B61 - RAILWAYS