Paul B. ASPENGEN

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North Aurora, IL, US

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Patents Grantslast 30 patents

Information Patent Grant
Railroad car constant contact side bearing assembly
- Patent number 8,813,655
- Issue date Aug 26, 2014
- Miner Enterprises, Inc.
- Paul B. Aspengen
- B61 - RAILWAYS
Information Patent Grant
Railcar constant contact side bearing assembly
- Patent number 8,807,050
- Issue date Aug 19, 2014
- Miner Enterprises, Inc.
- Paul B. Aspengen
- B61 - RAILWAYS

Patents Applicationslast 30 patents

Information Patent Application
Railroad car constant contact side bearing assembly
- Publication number 20130327245
- Publication date Dec 12, 2013
- Paul B. ASPENGEN
- B61 - RAILWAYS
Information Patent Application
Railcar constant contact side bearing assembly
- Publication number 20120291660
- Publication date Nov 22, 2012
- Paul B. ASPENGEN
- B61 - RAILWAYS