4. Electric heating
  5. Metal heating
  6. By arc

Robert L. Hirsch

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Artificial fish habitat structures

Fishing – trapping – and vermin destroying – Fishing
Patent

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Coal seam discontinuity sensor and method for coal mining appara

Mining or in situ disintegration of hard material – Automatic control; signaling or indicating – Of hard material disintegrating machine
Patent

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Method of mounting a fuel pellet in a laser-excited fusion react

Electric heating – Metal heating – By arc
Patent

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Production of hydrogen by means of a mechanical scraper on...

Gas: heating and illuminating – Generators
Reexamination Certificate

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Profile ID: LFUS-PAI-P-940520

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