| 11398794 |
Variable frequency drive thermal management |
Ismail Agirman |
2022-07-26 |
| 7041405 |
Fuel cell voltage control |
Tommy Skiba, David D. Jayne, Paul A. Grubb, Rishi Grover, Wesley E. Sedlacek, Jr. |
2006-05-09 |
| 6684055 |
System for remotely communicating voice and data to and from an elevator controller |
Barry G. Blackaby |
2004-01-27 |
| 6147620 |
Remote monitoring of elevator cab lights |
Barry G. Blackaby, William A. Wurts, William C. Rogers |
2000-11-14 |
| 5931264 |
Rail survey unit |
Geoffrey W. Gillingham, Francis J. Griffiths |
1999-08-03 |
| 5889239 |
Method for monitoring elevator leveling performance with improved accuracy |
Barry G. Blackaby, William A. Wurts |
1999-03-30 |
| 5866861 |
Elevator active guidance system having a model-based multi-input multi-output controller |
Rajesh Rajamani, Randall Keith Roberts |
1999-02-02 |
| 5814774 |
Elevator system having a force-estimation or position-scheduled current command controller |
Randall Keith Roberts, Rajesh Rajamani, Roy S. Colby |
1998-09-29 |
| 5652414 |
Elevator active guidance system having a coordinated controller |
Randall Keith Roberts, Clement A. Skalski |
1997-07-29 |
| 5242007 |
X-ray detection of residual ceramic material inside hollow metal articles |
David R. Judd, Gerald S. Golden |
1993-09-07 |
| 5070722 |
Turbine engine debris ingestion monitor |
Michael W. Hawman, Thomas M. Ritter |
1991-12-10 |
