William F. Langman

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Lonsdale, AU

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Patents Grantslast 30 patents

Information Patent Grant
Stud, arc shield and rail clip for securing railroad rails
- Patent number 4,778,106
- Issue date Oct 18, 1988
- Omark Industries, Inc.
- Leslie J. Diener
- E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
Information Patent Grant
Rail insulating pad assembly
- Patent number 4,629,118
- Issue date Dec 16, 1986
- Omark Industries, Inc.
- William F. Langman
- E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
Information Patent Grant
Spring rail fastener
- Patent number 4,424,935
- Issue date Jan 10, 1984
- Omark Industries, Inc.
- William F. Langman
- E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
Information Patent Grant
Steel railroad sleeper
- Patent number 4,417,690
- Issue date Nov 29, 1983
- Omark Industries, Inc.
- William F. Langman
- E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES