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WILLIAM E. PERRY
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LUDINGTON, MI, US
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Patents Grants
last 30 patents
Information
Patent Grant
Switch stoneblower
Patent number
6,334,396
Issue date
Jan 1, 2002
Pandrol Jackson, Inc.
William E. Perry
E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
Information
Patent Grant
Maintenance vehicle and method for measuring and maintaining the le...
Patent number
5,605,099
Issue date
Feb 25, 1997
Pandrol Jackson, Inc.
Dennis A. Sroka
E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
Information
Patent Grant
Stoneblower having adjustable workheads and improved blowing tubes
Patent number
5,577,446
Issue date
Nov 26, 1996
Pandrol Jackson, Inc.
William E. Perry
E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
Information
Patent Grant
Railroad track curve lining apparatus and method
Patent number
5,012,413
Issue date
Apr 30, 1991
Pandrol Jackson, Inc.
Dennis A. Sroka
E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
Patents Applications
last 30 patents
Information
Patent Application
SWITCH STONEBLOWER
Publication number
20010042487
Publication date
Nov 22, 2001
WILLIAM E. PERRY
E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES