| 11203876 |
Metal or alloy framed insulated building cladding system |
Don Delaney, Tyler Koshurba |
2021-12-21 |
| 5111678 |
Electric heater coil transferring and forming apparatus and method of use |
Arthur Evans |
1992-05-12 |
| 5098006 |
Header jig |
— |
1992-03-24 |
| 4995252 |
Method and apparatus for internally enhancing heat exchanger tubing |
Gerald F. Robertson, Ross A. Moyer |
1991-02-26 |
| 4885840 |
Method of attaching an insulator block with a T-slot to a coil |
— |
1989-12-12 |
| 4827602 |
Electric heater assembly fixture and method of use |
— |
1989-05-09 |
| 4807488 |
Adjustable coil retainer and spreader and method of use |
— |
1989-02-28 |
| 4805283 |
Method for forming slit fin coils |
— |
1989-02-21 |
| 4770241 |
Method and apparatus for forming slit fin coils |
— |
1988-09-13 |
| 4682488 |
Apparatus for forming slit fin coils |
— |
1987-07-28 |
| 4633941 |
Slit fin coil and the method of making coils |
Lawrence W. Ubowski |
1987-01-06 |
| 4633942 |
Slit fin coil and the method of making coils |
William E. Wright |
1987-01-06 |
| 4619024 |
Method of making coils |
Lawrence W. Ubowski |
1986-10-28 |
| 4619025 |
Method of making coils |
William E. Wright |
1986-10-28 |
| 4434841 |
Variably spaced wrapped fin heat exchanger |
Dale Jackson |
1984-03-06 |
| 4429737 |
Wrapped fin heat exchanger |
Dale Jackson |
1984-02-07 |