| 6717513 |
Electronic message delivery system utilizable in the monitoring of remote equipment and method of same |
David Sandelman, Joseph Rey |
2004-04-06 |
| 6535123 |
Electronic message delivery system |
David Sandelman |
2003-03-18 |
| 6462654 |
Electronic message delivery system utilizable in the monitoring of remote equipment and method of same |
David Sandelman |
2002-10-08 |
| 6437691 |
Electronic message delivery system utilizable in the monitoring of remote equipment and method of same |
David Sandelman, Joseph Rey |
2002-08-20 |
| 6211782 |
Electronic message delivery system utilizable in the monitoring of remote equipment and method of same |
David Sandelman |
2001-04-03 |
| 6160477 |
Electronic message delivery system utilizable in the monitoring of remote equipment and method of same |
David Sandelman |
2000-12-12 |
| 6152376 |
Valve modulation method and system utilizing same |
David Sandelman |
2000-11-28 |
| 6147601 |
Electronic message delivery system utilizable in the monitoring of remote equipment and method of same |
David Sandelman |
2000-11-14 |
| 5643482 |
Snow melt control system |
David Sandelman |
1997-07-01 |
| 5042431 |
Multiple boiler control system and method of operation |
Jana Marakowitz, David Sandelman |
1991-08-27 |
| 4755730 |
Variable resistance output motor controller |
David Sandelman, Douglas J. Lionetti |
1988-07-05 |
| 4191328 |
Integral thermostat-digital clock unit |
Roger H. Isaacs, David Sandelman |
1980-03-04 |