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Michael D. VanMaldegiam
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North Aurora, IL, US
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Patents Grants
last 30 patents
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
Information
Patent Grant
Railroad car energy absorption apparatus
Patent number
RE44177
Issue date
Apr 30, 2013
Miner Enterprises, Inc.
William P. O'Donnell
104 - Railways
Information
Patent Grant
Railcar constant contact side bearing assembly
Patent number
8,201,504
Issue date
Jun 19, 2012
Miner Enterprises, Inc.
William P. O'Donnell
B61 - RAILWAYS
Information
Patent Grant
Railroad car energy absorption apparatus
Patent number
7,044,061
Issue date
May 16, 2006
Miner Enterprises, Inc.
William P. O'Donnell
B61 - RAILWAYS
Information
Patent Grant
Railroad car energy absorption apparatus
Patent number
6,862,999
Issue date
Mar 8, 2005
Miner Enterprises, Inc.
William P. O'Donnell
B61 - RAILWAYS
Information
Patent Grant
Railroad car energy absorption apparatus
Patent number
6,792,871
Issue date
Sep 21, 2004
Miner Enterprises, Inc.
William P. O'Donnell
B61 - RAILWAYS
Patents Applications
last 30 patents
Information
Patent Application
Railcar constant contact side bearing assembly
Publication number
20120291660
Publication date
Nov 22, 2012
Paul B. ASPENGEN
B61 - RAILWAYS
Information
Patent Application
Railcar constant contact side bearing assembly
Publication number
20110011301
Publication date
Jan 20, 2011
William P. O'Donnell
B61 - RAILWAYS
Information
Patent Application
Railroad car energy absorption apparatus
Publication number
20050061196
Publication date
Mar 24, 2005
William P. O'Donnell
B61 - RAILWAYS
Information
Patent Application
Railroad car energy absorption apparatus
Publication number
20040129170
Publication date
Jul 8, 2004
William P. O'Donnell
B61 - RAILWAYS
Information
Patent Application
Railroad car energy absorption apparatus
Publication number
20040089193
Publication date
May 13, 2004
William P. O'Donnell
B61 - RAILWAYS