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

Theodorus A. Fahner

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Apparatus for and method of projecting a mask pattern on a subst

Photocopying – Projection printing and copying cameras – Step and repeat
Patent

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Apparatus for writing patterns in a layer on a substrate by mean

Electric heating – Metal heating – By arc
Patent

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Optical imaging system provided with an opto-electronic detectio

Radiant energy – Photocells; circuits and apparatus – Photocell controls its own optical systems
Patent

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Profile ID: LFUS-PAI-P-784171

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