| 12128259 |
Respirator negative pressure fit check devices and methods |
William A. Mittelstadt, David R. Stein, Nathan A. Abel, David M. Blomberg, Michael J. Cowell +6 more |
2024-10-29 |
| 11052268 |
Respirator negative pressure fit check devices and methods |
William A. Mittelstadt, David R. Stein, Nathan A. Abel, David M. Blomberg, Michael J. Cowell +6 more |
2021-07-06 |
| 10391338 |
Sleeve-fit respirator cartridge |
David M. Blomberg, Michael J. Cowell, William A. Mittelstadt, Nathan A. Abel |
2019-08-27 |
| 9950202 |
Respirator negative pressure fit check devices and methods |
William A. Mittelstadt, David R. Stein, Nathan A. Abel, David M. Blomberg, Michael J. Cowell +3 more |
2018-04-24 |
| D795416 |
Respirator mask |
David M. Blomberg, Michael J. Cowell |
2017-08-22 |
| D778430 |
Filter cartridge |
David M. Blomberg, Gary E. Dwyer, Pierre Legare, Serge Dubeau, Mark W. Schulz +1 more |
2017-02-07 |
| 9517367 |
Respiratory mask having a clean air inlet chamber |
Gary E. Dwyer, William A. Mittelstadt, Nathan A. Abel, David M. Blomberg, Michael J. Cowell |
2016-12-13 |
| 9510626 |
Sleeve-fit respirator cartridge |
David M. Blomberg, Michael J. Cowell, William A. Mittelstadt, Nathan A. Abel |
2016-12-06 |
| D762845 |
Respirator cartridge |
Gary E. Dwyer, John S. Huberty, Mark W. Schulz, Charlie Wood |
2016-08-02 |
| D759807 |
Respirator mask exhalation port |
David M. Blomberg, William A. Mittelstadt, Mark W. Schulz |
2016-06-21 |
| D747795 |
Respirator mask body |
David M. Blomberg, Michael J. Cowell, Mark W. Schulz, Charlie Wood |
2016-01-19 |
| D746437 |
Respirator mask having a communication grille |
David M. Blomberg, Gary E. Dwyer, Mark W. Schulz |
2015-12-29 |
| D744088 |
Respirator mask having a circular button |
David M. Blomberg, Kent E. Lageson, William A. Mittelstadt, Charlie Wood |
2015-11-24 |
| 9149669 |
Respiratory protection device harness assembly |
Michael J. Cowell, William A. Mittelstadt, Thomas G. Skulley, Nathan A. Abel, Fredrik Ericsson +3 more |
2015-10-06 |
