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US3610743A
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Adjustable interpupillary distance
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US3633214A
|
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Suspension device for hard hat
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US3584938A
|
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Adjustable length temples
|
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US3555562A
|
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Face shield mounting
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US3430263A
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Universal stop pin for head protective equipment
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US3444560A
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Adjustable headband
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US3440661A
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Cover unit for the window opening of a helmet or goggle
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US3363262A
|
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Goggle with separate lens frame
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US3425774A
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Spectacles with half moon lenses secured by interengaging projections and holes
|
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US3391976A
|
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Auxiliary nosepiece for spectacle frames
|
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US3273163A
|
|
Accessory attachment to a hard hat
|
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US3273162A
|
|
Hard hat with reinforcing ribs
|
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US3307543A
|
|
Cover for a respirator filter holder
|
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US3225357A
|
|
Cover plate for eye protecting device
|
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US3175225A
|
|
Suspension device for hard hat
|
|
US3209366A
|
|
Auxiliary nose piece for spectacle frames
|
|
US3072119A
|
|
Respirator with removable cartridge
|
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US3082767A
|
|
Head straps for respirator
|
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US3056140A
|
|
Goggle with removable lens cover
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US3075201A
|
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Headband assembly for welder's helmet
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