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Oil well pumping apparatus and method

Machine element or mechanism – Mechanical movements – Rotary to or from reciprocating or oscillating
Patent

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Oil well pumping mechanism

Machine element or mechanism – Mechanical movements – Rotary to or from reciprocating or oscillating
Patent

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Omnidirectional oscillator (glover gear)

Machine element or mechanism – Mechanical movements – Rotary to or from reciprocating or oscillating
Patent

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Orbiting mass oscillator with oil film cushioned bearings

Machine element or mechanism – Mechanical movements – Rotary to or from reciprocating or oscillating
Patent

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Oscillating member for transforming a rotary motion into a recip

Machine element or mechanism – Mechanical movements – Rotary to or from reciprocating or oscillating
Patent

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Oscillation generating apparatus

Machine element or mechanism – Mechanical movements – Rotary to or from reciprocating or oscillating
Patent

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Oscillation lever arm engine

Machine element or mechanism – Mechanical movements – Rotary to or from reciprocating or oscillating
Patent

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Oscillatory motion speed converter having drive and driven cams

Machine element or mechanism – Mechanical movements – Rotary to or from reciprocating or oscillating
Patent

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Pedal system

Machine element or mechanism – Mechanical movements – Rotary to or from reciprocating or oscillating
Reexamination Certificate

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Pendulum gear, especially for windshield wipers of motor vehicle

Machine element or mechanism – Mechanical movements – Rotary to or from reciprocating or oscillating
Patent

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Pick-up and placement apparatus

Machine element or mechanism – Mechanical movements – Rotary to or from reciprocating or oscillating
Reexamination Certificate

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Piston drive assembly

Machine element or mechanism – Mechanical movements – Rotary to or from reciprocating or oscillating
Patent

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Piston power generating and working machine

Machine element or mechanism – Mechanical movements – Rotary to or from reciprocating or oscillating
Patent

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Piston power generating machine

Machine element or mechanism – Mechanical movements – Rotary to or from reciprocating or oscillating
Patent

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Piston stroke varying mechanism for expansible chamber energy co

Machine element or mechanism – Mechanical movements – Rotary to or from reciprocating or oscillating
Patent

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Piston supporting structure for stirling cycle machine

Machine element or mechanism – Mechanical movements – Rotary to or from reciprocating or oscillating
Patent

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Piston-operated machine

Machine element or mechanism – Mechanical movements – Rotary to or from reciprocating or oscillating
Patent

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Pivot joint with retainer clip

Machine element or mechanism – Mechanical movements – Rotary to or from reciprocating or oscillating
Patent

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Portable walking beam pump jack

Machine element or mechanism – Mechanical movements – Rotary to or from reciprocating or oscillating
Patent

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Portable walking beam pump jack

Machine element or mechanism – Mechanical movements – Rotary to or from reciprocating or oscillating
Patent

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