| |
|
Inventor: Witmer; Warner H.
Address: Quakertown, PA
No. of patents: 2
Patents:
| Patent Number |
Title Of Patent |
Date Issued |
| 4915622 |
Fluid barrier curtain system |
April 10, 1990 |
| A fluid barrier curtain at an aperture in a wall within a duct, as at the entrance to a furnace, is disclosed that maintains separation of fluids on opposite sides of said barrier curtain while permitting passage of objects therethrough. The barrier curtain comprises aperture zone defini |
| 4696226 |
Fluid barrier curtain system |
September 29, 1987 |
| A fluid barrier curtain at an aperture in a wall within a duct, as at the entrance to a furnace, is disclosed that maintains separation of fluids on opposite sides of said barrier curtain while permitting passage of objects therethrough. The barrier curtain comprises aperture zone defini |
|
|
|
