| 7479871 |
Radio frequency warning system for ferromagnetic threats |
— |
2009-01-20 |
| 7315257 |
Automated meter reader having high product delivery rate alert generator |
Tim Patterson, Kenneth J. Derry |
2008-01-01 |
| 7248181 |
Automated meter reading system |
Tim Patterson, Kenneth J. Derry |
2007-07-24 |
| 7042368 |
Automated meter reader device having optical sensor with automatic gain control |
Tim Patterson, Kenneth J. Derry, Jason Pinkham |
2006-05-09 |
| 6798352 |
Optical sensor for utility meter |
— |
2004-09-28 |
| 6755148 |
Dual magnetic register for a utility meter |
— |
2004-06-29 |
| 6710721 |
Radio frequency automated meter reading device |
— |
2004-03-23 |
| 6653945 |
Radio communication network for collecting data from utility meters |
Dennis F. Johnson, Michael Wiebe, Nathan R. Jacob, Michael F. Murhpy, James J. Schellenberg +1 more |
2003-11-25 |
| 6373399 |
Wide area communications network for remote data generating stations |
Dennis F. Johnson, Michael Wiebe, Nathan R. Jacob, Michael Murphy, James J. Schellenberg +1 more |
2002-04-16 |
| 6172616 |
Wide area communications network for remote data generating stations |
Dennis F. Johnson, Michael Wiebe, Nathan R. Jacob, Michael Murphy, James J. Schellenberg +1 more |
2001-01-09 |
| 5963146 |
Wide area communications network for remote data generating stations |
Dennis F. Johnson, Michael Wiebe, Nathan R. Jacob, Michael F. Murhpy, James J. Schellenberg +1 more |
1999-10-05 |
| 5673252 |
Communications protocol for remote data generating stations |
Dennis F. Johnson, Don Marcynuk |
1997-09-30 |
| 5553094 |
Radio communication network for remote data generating stations |
Dennis F. Johnson, Michael Wiebe, Nathan R. Jacob, Michael Murphy, James J. Schellenberg +1 more |
1996-09-03 |