DR

David L. Rowden

VE Verbatim: 3 patents #1 of 6Top 20%
🗺 New York: #235 of 5,342 inventorsTop 5%
Overall (1989): #11,224 of 140,708Top 8%
3
Patents 1989

Issued Patents 1989

Showing 1–3 of 3 patents

Patent #TitleCo-InventorsDate
D304720 Disk cartridge Philip R. Ashe, James R. Carey, Patrick J. Champagne 1989-11-21
4858050 Structurally rigid disk cartridge adaptable to eliminating relative axial cartridge and/or transducer head loading/unloading movement Philip R. Ashe, James R. Carey, Patrick J. Champagne 1989-08-15
4805061 Self-positioning write protect mechanism for a cartridge Patrick J. Champagne 1989-02-14