Issued Patents All Time
Showing 1–16 of 16 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6668136 | Integral heating and cooling unit | Sam W. Henry, Paul Neilson, Randy Jarrett, Steven U. Nestel | 2003-12-23 |
| 6191400 | Metal sheath heating element and method of manufacturing same | — | 2001-02-20 |
| 5243903 | Recyclable container compactor | Michael A. Blackmer, Frank L. Bumbalough | 1993-09-14 |
| 5220155 | Heating and sensing apparatus for range top | — | 1993-06-15 |
| 4900897 | Sheathed electric heating element assembly | Mark A. Bartels, T. Randall Markum | 1990-02-13 |
| 4879453 | Self-regulating baseboard heater and system | — | 1989-11-07 |
| 4733055 | Heat transfer heating element and method | — | 1988-03-22 |
| 4689470 | Self-regulating baseboard heater, system and method | — | 1987-08-25 |
| 4687905 | Electric immersion heating element assembly for use with a plastic water heater tank | Mark A. Bartels, T. Randall Markum | 1987-08-18 |
| 4650972 | Heating cable and method of making same | — | 1987-03-17 |
| 4543469 | Grounding arrangement for metal sheathed heating element having a plastic mounting member | — | 1985-09-24 |
| 4468556 | Electric heating elements | John C. Stover | 1984-08-28 |
| 4395618 | Electric circulation heater for heating fluids such as oil | — | 1983-07-26 |
| D263734 | Metal extrusion for an electric heating element | Richard W. Brent, John C. Stover | 1982-04-06 |
| 4319127 | Electric heating elements | John A. Lindstrom | 1982-03-09 |
| 4214150 | Electric heating elements | — | 1980-07-22 |