locking and sealing profiles for downhole tools for use in earth wells; namely, landing nipples

'downhol':6 'earth':11 'land':14 'lock':1 'name':13 'nippl':15 'profil':4 'seal':3 'tool':7 'use':9 'well':12

locking and sealing profiles for downhole tools for use in earth wells; namely, lock mandrels, circulating devices with rotary or sliding sleeve valves, downhole safety valves, well packers, well plugs, wellheads and wellhead plugs

'circul':16 'devic':17 'downhol':6,24 'earth':11 'lock':1,14 'mandrel':15 'name':13 'packer':28 'plug':30,34 'profil':4 'rotari':19 'safeti':25 'seal':3 'sleev':22 'slide':21 'tool':7 'use':9 'valv':23,26 'well':12,27,29 'wellhead':31,33

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