| 8130914 |
Calling card having an associated pre-recorded personal greeting |
Stacy Borocz, Anne Gillman, Karl M. Henderson |
2012-03-06 |
| 7180990 |
Prepaid telephone calling card with message recording capability |
Karl M. Henderson, Stacy Borocz, Anne Gillman, Kamran Mir |
2007-02-20 |
| 7145989 |
Pre-paid telephone calling card having an associated pre-recorded personal greeting |
Stacy Borocz, Anne Gillman, Karl M. Henderson |
2006-12-05 |
| 6550248 |
Electrical generating system using solar energy |
Bruce Sangster |
2003-04-22 |
| 6507644 |
Pre-paid telephone calling card linked to a stored value account |
Karl M. Henderson, David K. Ford, Kamran Mir |
2003-01-14 |
| 6404869 |
Preferred billing rate pre-paid telephone calling card |
Karl M. Henderson, Charles David Ford, Kamran Mir |
2002-06-11 |
| 6123868 |
Photochromic molecular heat exchange medium |
Bruce Sangster |
2000-09-26 |
| 6051186 |
Container and devices to assure sterilization of surfaces and devices by electric field and sterilizing media |
Bruce Sangster |
2000-04-18 |
| 5750072 |
Sterilization by magnetic field stimulation of a mist or vapor |
Bruce Sangster |
1998-05-12 |
| 5626020 |
Molecular refrigerants and cooling systems |
Bruce Sangster |
1997-05-06 |
| 4216658 |
Refrigeration means and methods |
Ralph N. Baker, III, Byron W. Olson |
1980-08-12 |