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Pistons with oil retaining depressions

Expansible chamber devices – With lubricating means – Piston has lubricant retaining or conducting means
Patent

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Plastic shoes for compressors

Expansible chamber devices – With lubricating means
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Plunger piston for internal combustion engines

Expansible chamber devices – With lubricating means – Piston has lubricant retaining or conducting means
Patent

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Porous restrictor for gas bearing

Expansible chamber devices – With lubricating means
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Pump

Expansible chamber devices – With lubricating means – Portion of expansible chamber device includes solid...
Patent

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Pump piston having ring lubrication means

Expansible chamber devices – With lubricating means – Piston has lubricant retaining or conducting means
Patent

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Radial piston machine with piston shoes

Expansible chamber devices – With lubricating means – Lubricant passage extends axially through articulated piston...
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Reciprocable piston with a fluid scavenging system and...

Expansible chamber devices – With lubricating means – Piston has lubricant retaining or conducting means
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Reciprocating compressor

Expansible chamber devices – With lubricating means – Portion of expansible chamber device includes solid...
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Reciprocating fluid pumps with chromium nitride coated...

Expansible chamber devices – With lubricating means – Portion of expansible chamber device includes solid...
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Reciprocating piston

Expansible chamber devices – With lubricating means – Piston has lubricant retaining or conducting means
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Reciprocating piston

Expansible chamber devices – With lubricating means – Piston has lubricant retaining or conducting means
Patent

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Reduced impact piston assembly

Expansible chamber devices – With lubricating means – Piston has lubricant retaining or conducting means
Patent

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Reversing low pressure lubricating valve

Expansible chamber devices – With lubricating means – Valve means in lubricant passage
Patent

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Rotary piston

Expansible chamber devices – With lubricating means – Piston has lubricant retaining or conducting means
Patent

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Seal in pump piston intermittently permitting conduction of pump

Expansible chamber devices – With lubricating means – Valve means in lubricant passage
Patent

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Sealed articulated piston

Expansible chamber devices – With lubricating means – Piston has lubricant retaining or conducting means
Patent

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Sealing arrangement on a piston-cylinder unit

Expansible chamber devices – With lubricating means – Portion of expansible chamber device includes solid...
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Sealing system for a compressor

Expansible chamber devices – With lubricating means
Reexamination Certificate

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Self-lubricating piston for pharmaceutical container

Expansible chamber devices – With lubricating means – Piston has lubricant retaining or conducting means
Patent

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