4. Boots, shoes, and leggings

Karl Stellwagen

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Gas engine

Internal-combustion engines – Charge forming device – Gaseous fuel and air mixer
Patent

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Gas engine having roller-shaped rotary slide valve

Internal-combustion engines – Valve – Rotary
Patent

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Gas motor

Power plants – Combustion products used as motive fluid – Using special fuel or oxidizer
Patent

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Gas motor control

Boots – shoes – and leggings
Patent

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Pre-combustion chamber enrichment

Internal-combustion engines – Precombustion and main combustion chambers in series – Precombustion chamber assembly inserted in spark plug hole
Reexamination Certificate

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Profile ID: LFUS-PAI-P-737079

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