Amstead Industries Incorporated

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
 
 
B61F RAIL VEHICLE SUSPENSIONS, e.g. UNDERFRAMES, BOGIES, ARRANGEMENTS OF WHEEL AXLES; RAIL VEHICLES FOR USE ON TRACKS OF DIFFERENT WIDTH; PREVENTING DERAILING; WHEELS GUARDS; OBSTRUCTION REMOVERS OR THE LIKE 121
 
 
 
F28B STEAM OR VAPOUR CONDENSERS 17

Top Patents (by citation)

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
6324995 Railway car center filler plateJun 04, 99Dec 04, 01[B61F]
6142219 Closed circuit heat exchange system and method with reduced water consumptionMar 08, 99Nov 07, 00[F28B]

Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
4549666 Railway vehicle draft sill and slackless draft assemblyExpiredSep 30, 82Oct 29, 85[B61G, B61D]

Top Inventors for This Owner

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