PROTECTIVE HEADGEAR AND OPTICAL-FILTER CARTRIDGE REMOVABLY MOUNTABLE THERETO
Protective headgear and an optical filter cartridge that is removably mountable thereto, and methods of removably inserting such a cartridge and removing such a cartridge.
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Format: | Patent |
Sprache: | eng |
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Online-Zugang: | Volltext bestellen |
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Zusammenfassung: | Protective headgear and an optical filter cartridge that is removably mountable thereto, and methods of removably inserting such a cartridge and removing such a cartridge. |
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