Assignee
BEAMAN DONALD COY
3 granted patents·28 citations·filing 2005–2009
Technology mixB61L3
Top patents by PatentIndex Score
3 records- 0174US7416159B2Method and apparatus for controlling railway switchesBEAMAN DONALD COY·Filed 2005·Granted Aug 26, 2008·17 cites·2 claims
- 0259US7946538B1External point spring locking deviceBEAMAN DONALD COY·Filed 2009·Granted May 24, 2011·6 cites·15 claims
- 0358US7861979B2Dragging equipment detectorBEAMAN DONALD COY·Filed 2007·Granted Jan 4, 2011·5 cites·2 claims
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