4. Geometrical instruments

James E. Lynch

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Active counterbalance for a power swivel during well drilling

Boring or penetrating the earth – With means to simultaneously feed and rotate tool from a...
Patent

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Electrical terminal with cavity compensator

Metal working – Method of mechanical manufacture – Electrical device making
Patent

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Pressure-sensitive variable-resistance hygroscopic fluid detecto

Induced nuclear reactions: processes – systems – and elements – Testing – sensing – measuring – or detecting a fission reactor... – Leak detection
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Spring actuated power swivel support rollers

Boring or penetrating the earth – With means to simultaneously feed and rotate tool from a...
Patent

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Substrate recessed receptacle

Geometrical instruments
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Profile ID: LFUS-PAI-P-632540

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