Christopher Joseph McCallum

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Yankton, SD, US

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Patents Grantslast 30 patents

Information Patent Grant
Rail car extension system
- Patent number 8,141,498
- Issue date Mar 27, 2012
- Derrick K. Barr
- B61 - RAILWAYS
Information Patent Grant
Roll assist mechanism for tarp systems
- Patent number 6,513,856
- Issue date Feb 4, 2003
- Shur Company
- Bradford P. Swanson
- B60 - VEHICLES IN GENERAL

Patents Applicationslast 30 patents

Information Patent Application
RAIL CAR EXTENSION SYSTEM
- Publication number 20090260538
- Publication date Oct 22, 2009
- Shur Company
- Christopher Joseph McCallum
- B61 - RAILWAYS