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Dual-seal drill bit with fluid cleaning capability

E - Fixed Constructions – 21 – B
Patent

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Dual-stage valve straddle packer for selective stimulation...

E - Fixed Constructions – 21 – B
Patent

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Dual-use and manual pool cleaning apparatus

E - Fixed Constructions – 04 – H
Patent

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Dual-wall drill pipe

E - Fixed Constructions – 21 – B
Patent

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Duckboard

E - Fixed Constructions – 01 – C
Patent

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Duckboard fatigue relief mat

E - Fixed Constructions – 04 – F
Patent

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Duct forming device and method

E - Fixed Constructions – 04 – B
Patent

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Duct mounting structure for prefabricated curtain wall with...

E - Fixed Constructions – 04 – H
Patent

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Duct terminator

E - Fixed Constructions – 04 – C
Patent

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Duct-forming devices

E - Fixed Constructions – 21 – B
Patent

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Duct-forming devices

E - Fixed Constructions – 21 – B
Patent

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Duct-forming devices

E - Fixed Constructions – 21 – B
Patent

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Dumbwaiter door

E - Fixed Constructions – 06 – B
Patent

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Dummy plug pressure recorder

E - Fixed Constructions – 21 – B
Patent

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Dummy she-bolt

E - Fixed Constructions – 04 – G
Patent

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Dump bailer

E - Fixed Constructions – 21 – B
Patent

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Dump block

E - Fixed Constructions – 02 – F
Patent

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Dump bucket arch

E - Fixed Constructions – 02 – F
Patent

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Dump linkage for rear powered elevating scraper

E - Fixed Constructions – 02 – F
Patent

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Dump truck stone slinger

E - Fixed Constructions – 01 – C
Patent

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