| 5810146 |
Wide edge lead currency thread detection system |
— |
1998-09-22 |
| 5765434 |
Capacitive water height gauge and method |
— |
1998-06-16 |
| 5753814 |
Magnetically-oscillated probe microscope for operation in liquids |
Wenhai Han, Stuart Lindsay, Tianwei Jing |
1998-05-19 |
| 5535871 |
Detector for a security thread having at least two security detection features |
— |
1996-07-16 |
| 5434427 |
Currency verification device |
Timothy T. Crane, Robert J. Danek, Richard A. Menelly |
1995-07-18 |
| 5419424 |
Currency paper security thread verification device |
— |
1995-05-30 |
| 5417316 |
Capacitive verification device for a security thread embedded within currency paper |
— |
1995-05-23 |
| 5394969 |
Capacitance-based verification device for a security thread embedded within currency paper |
— |
1995-03-07 |
| 5308992 |
Currency paper and banknote verification device |
Timothy T. Crane, Robert J. Danek, Richard A. Menelly |
1994-05-03 |
| 5279403 |
Microwave security thread detector |
Timothy T. Crane |
1994-01-18 |
| 4857747 |
Method and apparatus for analyzing the formation of a web of material via generating a formation index |
Joseph A. Bolton |
1989-08-15 |
| 4402482 |
Precision traveling optical table assembly |
Frank R. Mitchell |
1983-09-06 |
| 4312590 |
Optical scanner and system for laser beam exposure of photo surfaces |
— |
1982-01-26 |
| 4233636 |
Optical read-write system with electronically variable image size |
Gary Hoogerbrugge |
1980-11-11 |