4. H - Electricity
  5. 01
  6. K

Rudolph Kaufman

H - Electricity – 01 – K

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Energy efficient incandescent lamp with improved filament...

H - Electricity – 01 – J
Patent

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Incandescent lamp with high pressure rare gas filled...

H - Electricity – 01 – K
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Lamp with oscillating filament and method of making the same

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Profile ID: LFCA-PAI-P-376972

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