4. Optical: systems and elements
  5. Compound lens system
  6. Microscope

Derwin Fritts

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Gem microscope having a swivel base and a stationary power cord

Optical: systems and elements – Compound lens system – Microscope
Reexamination Certificate

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Gem microscope with portability kit

Optical: systems and elements – Compound lens system – Microscope
Reexamination Certificate

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Profile ID: LFUS-PAI-P-2927344

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