Assignee

ASPENGREN PAUL B

US·2 granted patents·11 citations·filing 2013–2014

Technology mixB61F2

Top patents by PatentIndex Score

2 records

0181US8967052B2Railcar constant contact side bearing assemblyASPENGREN PAUL B·Filed 2013·Granted Mar 3, 2015·7 cites·18 claims
0278US9421986B2Railroad car constant contact side bearing assemblyASPENGREN PAUL B·Filed 2014·Granted Aug 23, 2016·4 cites·18 claims

Counts cover granted patents and pending applications in the PatentIndex corpus. How scoring works →