Donald S. Seiford Sr.

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Inver Grove Hts, MN, US

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Patents Grantslast 30 patents

Information Patent Grant
Rail car moving system
- Patent number 4,926,755
- Issue date May 22, 1990
- DS Industrial & Marine Co., Inc.
- Donald S. Seiford
- B61 - RAILWAYS
Information Patent Grant
Connector with a locking mechanism and connector box therefor
- Patent number 4,815,887
- Issue date Mar 28, 1989
- DS Industrial & Marine Co., Inc.
- Donald S. Seiford
- E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES