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David A. Bies — 2 Patents

Pimba, AU: #32 of 142 inventorsTop 25%
Overall (All Time): #1,709,992 of 4,157,543Top 45%
2 Patents All Time
David A. Bies has been granted 2 US patents. The first was granted in 1987 and the most recent in August 1992. David A. Bies ranks #1,709,992 of 4,157,543 US inventors in our database (top 41.1%). Patent records list David A. Bies in Pimba, AU.

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
5136926 Vibration generator with a control valve in an inertial body controlled by a wave form shape of fluid flow to the valve Stewart G. Page 1992-08-11
4660448 Sound reducing means 1987-04-28