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JH

James B. Hellwarth — 1 Patent

Sausalito, CA: #167 of 273 inventorsTop 65%
California: #249,524 of 386,348 inventorsTop 65%
Overall (All Time): #2,406,284 of 4,157,543Top 60%
1 Patents All Time
James B. Hellwarth has been granted 1 US patent. All of these patents were granted in 1990. James B. Hellwarth ranks #2,406,284 of 4,157,543 US inventors in our database (top 57.9%). Patent records list James B. Hellwarth in Sausalito, CA, US.

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
4935956 Automated public phone control for charge and collect billing George A. Hellwarth, David C. Hellwarth, Jan G. Hellwarth 1990-06-19

Frequent Collaborators

David C. Hellwarth1 shared
Jan G. Hellwarth1 shared
George A. Hellwarth1 shared

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