| 6732733 |
Half-mask respirator with head harness assembly |
David M. Castiglione, William A. Mittelstadt, Alan J. Solyntjes |
2004-05-11 |
| 6457473 |
Drop-down face mask assembly |
David C. Byram |
2002-10-01 |
| D426298 |
Full-face respirator lens |
Vaughn B. Grannis, David P. Knivsland, Joseph G. Reischel, David C. Byram |
2000-06-06 |
| 6062221 |
Drop-down face mask assembly |
David C. Byram |
2000-05-16 |
| D421801 |
Carriage for drop-down mask assembly |
David C. Byram |
2000-03-21 |
| D421299 |
Carriage for drop-down mask assembly |
David C. Byram |
2000-02-29 |
| 6016805 |
Face seal for respirator |
James A. Burns |
2000-01-25 |
| D409744 |
Full face respirator lens |
Vaughn B. Grannis, David P. Knivsland, Joseph G. Reischel, David C. Byram |
1999-05-11 |
| D388872 |
Full face respirator lens |
Vaughn B. Grannis, David P. Knivsland, Joseph G. Reischel, David C. Byram |
1998-01-06 |
| D379160 |
Buckle |
Ronald C. Johansson, Vaughn B. Grannis |
1997-05-13 |
| D378610 |
Full face respirator |
Joseph G. Reischel, David P. Knivsland, David C. Byram, Vaughn B. Grannis |
1997-03-25 |
| 5481763 |
Molded head harness |
David C. Byram |
1996-01-09 |
| RE35062 |
Filter element |
Daniel A. Japuntich, Sabrina M. Yard |
1995-10-17 |
| 5394568 |
Molded head harness |
David C. Byram |
1995-03-07 |
| 4886058 |
Filter element |
Daniel A. Japuntich, Sabrina M. Yard |
1989-12-12 |
