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"DEAN R. DUFFY"
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"DEAN R. DUFFY"
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RESPIRATOR INCLUDING ADJUSTABLE STRAP AND METHOD OF FORMING SAME
by
Duffy
,
Dean R
Year of Publication
17.02.2022
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Filtering face-piece respirator having folded flange
by
Duffy
,
Dean R
Year of Publication
14.09.2021
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Respirator Including Transversely-Extending Pleat And Method Of Forming Same
by
Duffy
,
Dean R
Year of Publication
17.12.2020
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RESPIRATOR INCLUDING ADJUSTABLE STRAP AND METHOD OF FORMING SAME
by
DUFFY
,
Dean R
Year of Publication
04.06.2020
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Filtering face-piece respirator having nose cushioning member
by
Duffy
,
Dean R
Year of Publication
31.03.2020
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RESPIRATOR INCLUDING ADJUSTABLE STRAP AND METHOD OF FORMING SAME
by
DUFFY
,
Dean R
Year of Publication
19.03.2020
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Respirator including contrast layer
by
Duffy
,
Dean R
Year of Publication
03.03.2020
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RESPIRATOR INCLUDING TRANSVERSELY-EXTENDING PLEAT AND METHOD OF FORMING SAME
by
DUFFY
,
Dean R
Year of Publication
11.07.2019
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Filtering face-piece respirator having darted mask body
by
Duffy
,
Dean R
Year of Publication
26.03.2019
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Filtering face-piece respirator having strap-activated folded flange
by
Duffy
,
Dean R
Year of Publication
22.01.2019
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Filtering face-piece respirator having nose notch
by
Duffy
,
Dean R
Year of Publication
27.11.2018
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FILTERING FACE-PIECE RESPIRATOR HAVING ROUNDED PERIMETER
by
DUFFY
,
DEAN R
Year of Publication
31.10.2018
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Filtering face-piece respirator having parallel line weld pattern in mask body
by
Duffy
,
Dean R
Year of Publication
01.08.2018
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FILTERING FACE-PIECE RESPIRATOR HAVING NOSE CUSHIONING MEMBER
by
DUFFY
,
Dean R
Year of Publication
04.07.2018
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FILTERING FACE-PIECE RESPIRATOR HAVING ROUNDED PERIMETER
by
DUFFY
,
Dean R
Year of Publication
25.04.2018
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Respirator Including Contrast Layer
by
Duffy Dean R
Year of Publication
12.04.2018
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FILTERING FACE-PIECE RESPIRATOR HAVING FOLDED FLANGE
by
DUFFY DEAN R
Year of Publication
30.03.2018
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Respirator including contrast layer
by
Duffy Dean R
Year of Publication
16.01.2018
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Horizontal flat-fold filtering face-piece respirator having indicia of symmetry
by
Duffy Dean R
Year of Publication
28.11.2017
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Filtering Face-Piece Respirator Having Nose Cushioning Member
by
Duffy Dean R
Year of Publication
09.11.2017
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