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GH

George T. Happer

Overall (All Time): #2,370,640 of 4,157,543Top 60%
2 Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
4286630 Surface ducting — 1981-09-01
4269231 Below surface ducting — 1981-05-26

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