4. Boots, shoes, and leggings

Fred D. Lang

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Apparatus for the determination and evaluation of coal...

Data processing: measuring – calibrating – or testing – Measurement system – Performance or efficiency evaluation
Reexamination Certificate

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Contaminant shield for viewing ports

Ventilation – Having protecting air current – Including current adjusting mean
Patent

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Emissions spectral radiometer/fuel flow instrument

Boots – shoes – and leggings
Patent

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Input/loss method for determining boiler efficiency of a...

Data processing: measuring – calibrating – or testing – Measurement system – Performance or efficiency evaluation
Reexamination Certificate

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Input/loss method for determining fuel flow, chemistry,...

Data processing: measuring – calibrating – or testing – Measurement system – Performance or efficiency evaluation
Reexamination Certificate

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Profile ID: LFUS-PAI-P-1005450

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