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US2470681A
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Flow intermitter for cased wells
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Remotely controlled flow valve operating tool
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Remotely controlled flow valve operating tool
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Pressure gauge for pneumatic tires
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Valveless pressure regulator
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US2370837A
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Wrench
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US2368406A
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Remotely controlled flow valve
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US2368407A
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Remotely controlled flow valve
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US2366175A
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Remotely controlled flow valve
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US2372657A
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Side drive for rear wheels
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US2371498A
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Automatically rotatable bit for cable well tools
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US2374169A
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Means for cementing between multiple sands
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US2370140A
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Flow intermitter
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US2372656A
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Flow intermitter
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US2402728A
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Flow intermitter
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US2394977A
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Bottom hole regulator and choke
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Pressure regulator
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US2370139A
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Pressure regulator, temperature resistant
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