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Home › Inventors › James B. Hellwarth

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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 #	Title	Co-Inventors	Date
4935956	Automated public phone control for charge and collect billing	George A. Hellwarth, David C. Hellwarth, Jan G. Hellwarth	1990-06-19

James B. Hellwarth — 1 Patent

Issued Patents All Time

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