John L. Harmsen

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Vienna, VA, US

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Patents Grantslast 30 patents

Information Patent Grant
Railroad tie cover
- Patent number 4,609,144
- Issue date Sep 2, 1986
- Stedef S.A.
- John L. Harmsen
- E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
Information Patent Grant
Railroad tie cover
- Patent number 4,489,884
- Issue date Dec 25, 1984
- Stedef S.A.
- John L. Harmsen
- E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
Information Patent Grant
Railroad tie cover
- Patent number 4,356,968
- Issue date Nov 2, 1982
- Stedef S.A.
- John L. Harmsen
- E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
Information Patent Grant
Rail fastener
- Patent number 4,266,720
- Issue date May 12, 1981
- Stedef S.A.
- John L. Harmsen
- E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES